Why wireless adapter cannot establish an internet connection in Windows 7?

Similar Questions

• cannot maintain the internet connection

  My laptop Dell 5 years running Windows 7 cannot maintain an internet connection. I have a dsl router that provides an "excellent" signal but I drop bars on the Internet in the right lower margin indicator and get "no internet connection" when I go there but show an excellent signal 'connected' when I opened the window wireless network. I can regain access if I unplug and then plug only to deteriorate again. Recently changed from McAfee to bitdefender without best result. No sign of lingering programs McAfee.

  Hello

  Welcome to the Microsoft community.

  In order to help you better, please provide us with the information:

  Installed any software of third-party security on your computer?

  You could deal with the issue due to several reasons such as problems of NIC driver problems, hardware problems, or software.

  Refer to the following:

  Method 1:

  Run the Fix - It from the link.

  It will help for common problems with wireless network connections settings.

  http://Windows.Microsoft.com/en-in/Windows/cant-connect-to-network#1TC=Windows-7

  Method 2:

  I suggest you to temporarily disable the antivirus software and check if it helps.

  Note: The computer without antivirus software or firewall is a potential threat to the computer; Be sure to activate security software after completing the troubleshooting steps and after identifying the problem.

  Method 3:

  I suggest you to return the item and check if it helps.

  The problems of network card:

  http://Windows.Microsoft.com/en-us/Windows/fix-network-adapter-problems#1TC=Windows-7

  Method 4:

  Check the link and try to run the troubleshooter to check if it helps.

  Windows wireless and wired network connection problems

  http://Windows.Microsoft.com/en-us/Windows/network-connection-problem-help#network-problems=Windows-7&V1H=win81tab1&V2H=win7tab1&V3H=winvistatab1&v4h=winxptab1

  You can also try in safe mode with network and check if the problem persists. Follow the link below to check the issue in safe mode with networking:

  http://Windows.Microsoft.com/en-us/Windows/Start-computer-safe-mode#start-computer-safe-mode=Windows-7

  Return with the required information, so that we can help you resolve the issue.

• WRT54GS Wireless Router recently started disconnecting Internet connection after 9 months

  Hello, I have read some and see that it is a problem common but of are to be decided.

  I have a Lynksys WRT54GS with the latest Firmware update v7.2 27 July 2009 (FW_WRT54GSv7.2_7.2.07.013_EN_20090727)

  I ran 2 desktop computers as well as my DVR security by the security cameras for remote monitoring, also portable hook upward wireless sometimes as well without any problem using this router for over 9 months now with no problems until the last few days... I never log out and leave it on 24/7 for 9 months without problem and now recently I had to pull on the power cord from the back of the router and reconnect it to re power on the router to establish an internet connection.

  Now the last 3 days the router loses its internet connection each monutes a few... hours... the time it disconnects are random moments and I have the programs I need to run all day but can't because the router loses its connections...

  I applied the firmware again... re factory - configure the router... rebooted the computer... tried cloning the MAC address... all seem to be doing nothing... the same problem still exists.

  All of the minutes or hours so it disconnects the interent.

  I ran the office computer directly to the DSL Modem and I'm online very well with a desktop computer without disconnections for hours and hours (18hrs to date is not a problem), so I know this isn't the access provider. I had this problem I believe before with a previous Lynksys router and then bought it and now after this short period it seems to do the same thing again with this one. What a pain in the but.

  All solutions and more...

  Re application firmware... then

  factory re set the router... then

  re - connect computers as if it were a new router... the MAC address cloning? Geezus... it must be one simple solution other then buy another brand router.

  Thanks in advance...

  What is the IP address, find the modem directly...? Connect the computer directly to the modem and check the ip address? What is the ip address, you get the router...?

  Try the following settings on the router and check the connection...

  -Change the channel to 11-2 wireless, 462 GHz

  -Under the Advance wireless settings tab, change the tag at 50, Fragmentation threshold to 2304, interval RTS threshold to 2304

• Satellite A100 - cannot get an Internet connection

  Hello

  I have a Satellite A100 and I can't connect to internet after seeing my reg / cleaned by uniblue, and for the love of me can't get a connection.

  I eat to get my hub connected to the internet, but my laptop just will not allow connection, it's a MCE and it works perfectly fine. I had so many divergent answers at different addresses, all ways said it that another provider has control or error 678. It seems that it's a question of access between the provider of my IP and my system provider does not communicate through this PROTOCOL and my XP PROFESSIONAL system.

  Can anyone help please?

  Hello

  To be honest your ad is a little difficult to understand, and doesn t contain all important information.
  Can you connect to the Internet through WLAN or LAN?

  What happens now exactly if you are trying to establish an Internet connection?
  Your router can connect to the Internet? What is the status now?

  If you have problems with your internet provider you must contact them directly. They can check your connection and make sure that you use the right connection information.

• I installed Internet Explorer 8 and cannot get an internet connection...

  I installed Internet Explorer 8 and cannot get an internet connection using this program.  However, I get a connection very well when I surfed with Firefox.  I tried to disable the firewall and still no connectivity.  I am connected through a Netgear router with a hard line.  The signal is strong.  When I run a diagnostic on Internet Explorer, I get a message from the bed... WINDOWS CANNOT CONNECT TO THE INTERNET USING HTTP, HTTPS, OR FTP.  THIS IS PROBABLY CAUSED BY THE SETTINGS OF FIREWALL ON THIS COMPUTER.
  CHECK THE SETTINGS OF FIREWALL FOR THE HTTP PORT (80), HTTPS PORT (443) AND FTP PORT (21).
  YOU MAY NEED TO CONTACT YOUR INTERNET SERVICE PROVIDER OR THE MANUFACTURER OF YOUR FIREWALL SOFTWARE.
  No idea how to solve the connection on Internet Explorer?

  run malwarebytes.

  Also, try the following

  1. internet options and click the Connections tab
  2. and then click LAN settings and uncheck everything.
  3. and then click on apply & ok.
  MCP. MCDST. LVL 80

• I just loaded windows XP on my old tower. I have an ethernet cable connected to my modum but I can't establish an internet connection.

  I just loaded windows XP on my old tower. I have an ethernet cable connected to my modem, but I can't establish an internet connection.

  You are welcome for the answer. You will need to use a cd/dvd drive or a removable media like a flash/USB device to transfer the file on the computer in question. You can download the LOM Broadcom 10/100 Ethernet controller driver from HERE.

• Set the sharing of internet connection using Windows XP & Windows 7 (two laptops). __

  We have two Toshiba laptops, using a Windows XP operating system and the other Windows 7 operating system.  We use a UM175 Verizon Wireless Modem so that in the United States (we are snowbirds) and an Internet Mobile Rogers stick to the Canada.  I have read the article on http://support.microsoft.com/kb/306126 and would like to know if this procedure would allow us to be able to connect two laptops to a modem for internet connection.
  Thank you for your help.

  Use this procedure to connect the modem to the Windows XP computer wirelessly and share the Internet connection with Windows 7 computer.

  Boulder computer Maven
  Most Microsoft Valuable Professional

• Why do I keep losing my Internet connection when I still have a good WIRELESS card on my Windows 7 laptop?

  I always lose my Internet connection but yet my network signal strength is good. This happens on my Windows 7 operating system, but not my Windows Vista operating system. I'm afraid that this could have something to do with the firewall settings? He was repeatedly interruption of connection with the Internet and the two operating systems. Unplug the unit and reset the router solved the problem with Windows Vista, but only momentarily for Windows 7. I ran the diagnosis and resolution of problems. This utility can detect never any problem. Sometimes the diagnostics displays a problem with a connection to the Ethernet cord (but the laptop with Vista OS was fine). I have reset the wireless adapter, which claims to be working very well, over and over again. I have reset the settings of the Windows Firewall to its default settings. Don't know what else to do. Help, please! I fear that the problem exposed my laptop to a potential security threat.

  • I use a public network location setting I got with a security access code
  • Atheros AR9285 802.11b/g/n WiFi Adapter is the adapter connection
  • NETGEAR's router
  • WPA2-PSK is my type of security
  • Radio type 802.11n
  • Windows Firewall on
  • Microsoft Security Essentials on real-time
  • Microsoft Virtual Mini Port Adapter (WHICH I'VE NEVER SEEN BEFORE JUST NOW) displayed in network connections, but is not connected!

  Mindy

  Long @Mindy

  Try this,

  Assuming that the signal is strong, and that there is no noise in the electrical environment (http://www.ezlan.net/wbars.html ).

  Uncheck the box to the NIC of energy economy (I.e., do not leave the card save energy).

  There may be some variations on where is the energy saving setting.

  Here are a few examples, YMMV, look around your systems.

  Example, http://www.ezlan.net/example/powersave.jpg

  Example, http://www.ezlan.net/Win7/power_sav_wireless..jpg

  Example, http://www.ezlan.net/Win7/power_save_win7.jpg

  Example, http://www.ezlan.net/Win7/adv_power-sav.jpg

  ----------------------------

  Still a problem?

  Check support for the router and make sure that your using the latest firmware for the router.

  Check the support site for the manufacturer of the computer and make sure that you use the latest drivers.

  Download the drivers and extract them to a folder of your choice.

  In Device Manager, right-click on the adapter.

  Click Update drivers and choose her browse my computer for drivers.

  Choose let me a list of choices, click on disk and point to the folder with the drivers.

  Jack - Microsoft MVP, Windows networking. WWW.EZLAN.NET

• Internet connection down, windows 8, reset wireless network adapter

  I am running windows 8 on a computer laptop dv6 HP Envy and my internet connection keeps falling every few minutes.  This is due to the wireless network card and I have to reset the connection manually each time.  Even plugged into my modem, the connection drops.  I had my ISP reset the modem, tested and it works fine.  My connection is still down because of my network card.  Help, please.

  If you run the dism.exe / online/cleanup-image /restorehealth it may very well be able to fix the corrupted files. If necessary reruns sfc / scannow.  Hope this helps and if you need another post to help and we will be happy to help you.

  The above opinion is mine and mine nothing and does not necessarily reflect that of Microsoft, it's employees, or any other Member of this forum.

  "When we try to take anything by itself, we find it hitched to everything else in the universe." -John Muir.

  If you have one foot in the past, one foot in the future, you're pissing on today

• Inspiron n4010 virtual wireless adapter shows 'unplugged', does not connect

  I've scoured the web looking for a solution to this problem, found a similar question posted here, but no solution... en.Community.Dell.com/.../20263886

  My friend brought me his Inspiron n4010 notebook help saying until a few months ago, he used to connect to the wifi with no problems. All of a sudden, it wouldn't show all wireless networks available no matter where she went - its wireless home network, work network and neighborhood of free wifi hotspots - none would connect. Similarly, I have tried with my home wireless network and my network wireless office without result. Connect LAN2 (for Boradcom virtual Wireless Adapter) this always as 'unplugged network Cable.

  **********************************
  INFORMATION SYSTEM
  **********************************
  Reference Dell system detects shows the system as:

  Inspiron 14R (N4010, early 2010)
  Serial number: * Let me know if you need this info)
  Express service code: * Let me know if you need this info)

  Here are the specs of the system via system information:
  Host name: LAURA-PC
  Name of the operating system: Microsoft Windows 7 Home Premium
  OS version: 6.1.7601 Service Pack 1 Build 7601
  OS manufacturer: Microsoft Corporation
  OS configuration: Standalone Workstation
  OS Build type: multiprocessor Free
  Registered owner: *.
  Registered organization: Microsoft
  Product ID: *.
  Original installation date: 09/09/2010, 19:22:06
  Starting system: 02/02/2015, 12:13:39
  System manufacturer: Dell Inc..
  System model: Inspiron N4010
  Type of system: PC x 64
  Processor (s): 1 processor installed.
  [01]: Intel64 family 6 model 37 Stepping 2 GenuineInt
  El ~ 1065 Mhz
  BIOS version: Dell Inc. A02, 21/04/2010
  Windows directory: C:\Windows
  System directory: C:\Windows\system32
  Starting device: \Device\HarddiskVolume2
  Local system: en - us; English (United States)
  Input locale: en - us; English (United States)
  Time zone: (UTC-08:00) Pacific (U.S. & Canada)
  Total physical memory: 3 893 MB
  Available physical memory: 2 376 MB
  Virtual memory: Max size: MB 7 783
  Virtual memory: available: 4 938 MB
  Virtual memory: in use: 2 845 MB
  Office (s) swap file: C:\pagefile.sys
  Domain: workgroup
  Logon server: \\LAURA-PC
  Corrections: 268 fixes installed.
  [01]: KB2849697
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  [246]
  Network adapters: 3 interconnect installed.
  [01]: Atheros AR8152 PCI - E Fast Ethernet Controller
  Name of the connection: connection to the Local network
  DHCP enabled: Yes
  DHCP server: 192.168.1.254
  IP addresses
  [01]: 192.168.1.167
  [02]: b 87:4 d 76 fe80::b535:b8ea:8
  [03]: 2602:304:5692:7719:741's: b075:fb08:ce0
  [04]: b 87:4 d 76 2602:304:5692:7719:b535:b8ea:8
  [02]: device Bluetooth (personal area network)
  Name of the connection: Bluetooth network connection
  Status: Media disconnected
  [03]: Virtual Broadcom wireless adapter
  Connection name: Local 2 network connection
  Status: Media disconnected

  ***************************************************************
  TROUBLESHOOTING STEPS TAKEN UP TO NOW:
  ***************************************************************

  1. check that the wireless is enabled via the F2 key - it's (but turn it off seems to have no effect).

  2. check that the wireless is enabled in the BIOS - I. BIOS version is A02, I have not tried so far. I prefer to do it as a last resort, unless that specific need.

  BIOS: Wireless: enabled
  Wireless (Switch) / (Hotkey): all the
  Internal Bluetooth: enabled
  Internal WLAN: enabled
  Internal WWAN: enabled

  3. the Device Manager shows wireless network devices as missing from all the drivers? N °
  Device Manager showed the following details: virtual map of Broadcom, provider wireless: Broadcom, driver Date: 01-21-2010, driver Version: 5.60.48 - 35, digital signer: MS Windows HW Compatible Publisher

  4 are the network updated wireless drivers? With the help of Dell system detects, automatic detection of the system, he showed a driver update available listed as "Dell Wireless WLAN 1501 half Mini-Card (4313bgn) Driver. When running Setup, it gave an error "no compatible hardware found...". »

  5. I ran ipconfig/all. Here is the read:

  Microsoft Windows [Version 6.1.7601]
  Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

  C:\users\administrator>ipconfig/all

  Windows IP configuration

  Host Name . . . . . . . . . . . . : **********
  Primary Dns suffix...:
  Node... type: hybrid
  Active... IP routing: No.
  Active... proxy WINS: No.

  Ethernet connection to the network space 2 card:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Broadcom virtual wireless adapter
  Physical address.... : 02-50-F2-00-00-01
  DHCP active...: Yes
  Autoconfiguration enabled...: Yes

  Bluetooth network connection Ethernet card:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Device Bluetooth (personal area network)
  Physical address.... : C4-46-19-EF-96-56
  DHCP active...: Yes
  Autoconfiguration enabled...: Yes

  Ethernet connection to the Local network card:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Atheros AR8152 PCI - E Fast Ethernet Controller
  Physical address.... : B8-AC-6F-70-2F-4B
  DHCP active...: Yes
  Autoconfiguration enabled...: Yes

  Card tunnel Local Area Connection * 12:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Teredo Tunneling Pseudo-Interface
  Physical address.... : 00-00-00-00-00-00-00-E0
  DHCP active...: No.
  Autoconfiguration enabled...: Yes

  Card tunnel Local Area Connection * 14:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Microsoft 6to4 card
  Physical address.... : 00-00-00-00-00-00-00-E0
  DHCP active...: No.
  Autoconfiguration enabled...: Yes

  Tunnel adapter isatap. {C00AD485-0CED-4EF9-B632-033E9AFD14E9}:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Microsoft ISATAP adapter
  Physical address.... : 00-00-00-00-00-00-00-E0
  DHCP active...: No.
  Autoconfiguration enabled...: Yes

  Tunnel adapter isatap. {CD91392E-769E-4E32-A5C2-2680FF4BBC41}:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Adapter Microsoft ISATAP #4
  Physical address.... : 00-00-00-00-00-00-00-E0
  DHCP active...: No.
  Autoconfiguration enabled...: Yes

  Tunnel adapter isatap. {FC8C4544-C5EC-479D-AA95-B545EBDCD8C1}:

  State of the media...: Media disconnected
  The connection-specific DNS suffix. :
  ... Description: Adapter Microsoft ISATAP #6
  Physical address.... : 00-00-00-00-00-00-00-E0
  DHCP active...: No.
  Autoconfiguration enabled...: Yes

  C:\users\administrator >

  6. I checked the Windows Mobility Center. Wireless 'tile' was where it should have, according to other messages I saw who were on this subject. Strangely, when I clicked on the button to launch under Dell - Radio control options, checkboxes Wi - Fi and Mobile Broadband have been unchecked and greyed out.

  7. I have reset the winsock catalog and restarted the computer via the elevated command prompt (Administrator)
  NET winsock reset catalog
  No change in status wireless.

  8. I disabled the Norton firewall and Windows and anti-virus to see if wireless was somehow blocked by them. No change in status wireless.

  9. I checked the Windows power plan settings to confirm that network cards did not have their power reduced. I put the adapter wireless for maximum while on battery and current performance alternative.

  10. I checked the Windows Event Viewer logs > Windows Logs > system:

  I've seen repeated Scriptures error spread among the many dates of "BTHUSB (Blue Tooth adapter failed in an indeterminate way, will not be used.". The driver has been unloaded. "I saw no reference to what about wireless however.

  11. I tried to run Windows Update manually to see what, if any, driver updates it can find (using a network cable connection) and got the error 'cannot be updated because the Windows Update service is not started. I confirmed that he was released. I also manually stopped and restarted the service but continued to get the same error message. I kept the Windows Firewall and Norton Firewall (and antivirus) disabled in case they were interfereing with Windows Update, but no luck.

  12. I ran bad/ad/spyware scans with a portable version of Spybot and also a free version of SuperAntiSpyware, analyze the results showed several adware results, that have been deleted.

  13. I tried to manually configure the IP address, subnet mask and entered default gateway for IPv4 to the wireless adapter, which had been put on "obtain automatically", as it should. I also put the server DNS preferred my ISP (Comcast), then tried Google 8.8.8.8. This should have worked but the connection still showed as "cable disconnected" (why is a mistake to launch a "cable disconnected" wireless connection?)

  14. just for fun, I ran the update from the Intel driver from their site (via wired), who identified the available for graphics and Chipset updates - I've updated both, but it did not help (no surprise).

  15. I started Windows in Safe Mode with network - just as in normal mode, he showed the connection wireless as "cable disconnected".

  I am open to any suggestions at this point. The laptop is out of warranty so prefer to avoid paid support, if in any way possible.

  If you can get a hardware ID by activating / deactivating it on or turned off, it suggests itself wireless card is bad... Diagnostic tests could confirm this:

  http://dellwindowsreinstallationguide.com/F12-Preboot-Diagnostics/

  You can look in the service manual to try and reinsert the card or replace it. His work a bit longer than necessary:

  http://FTP.Dell.com/manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/Inspiron-14r_service%20manual_en-us.PDF

  An easier solution if you are uncomfortable with the material of the Assembly would be to buy a USB wireless adapter.

• EA4500 - a wireless device of many with internet connectivity problem

  Hello

  I wonder if anyone can comment on a subject that I have with a (a) wireless on my home network devices.  The problem is that a Dell laptop knows slow or no internet connectivity using wireless at all.  Sometimes 1-2 minutes to load one page, other times the message 'not able to display the Web page' dreaded.  That's using Ethernet.  I have another laptop (brand/model exact even) and it has no problem.  I also have a Macbook Pro and other IOS from Apple (iPod/iPad) devices which are very good.  Several connected Ethernet devices are very good as well.  The laptop in question had no problem with my previoius Linksys devices, which are a BEFSR41/WAP55AG and a WRT-54GS v2.  This laptop was the first day or two on the EA4500, but something happened that causes this problem.  I had to add the WAP55AG on my network so my son is happy again, but my plan was to dismantle the other devices.  Suggestions regarding what I can do to fix this are greatly appreciated.

  Thank you.

  EA4500 Firmware v.2.0.37

  Laptop Dell Inspiron 15 w/Intel Centrino Wireless N1030, 1 x 2 bgn (2.4 GHz) + Bluetooth

  Hello

  Thanks for the suggestion.  I tired who, but it did not work.  I then called Dell and they found that the wireless adapter on battery power has been set to maximum power saving.  Changed for maximum Performance and it's been very well.  Fortunately there is nothing wrong with the router.  Thanks again for the suggestion.

• Cannot share the internet connection on the network with sprint card

  Hi all

  I'm stumped on this one. I'm working on my network of fathers, and he lives in a rural area. Unfourantely, there are not a lot of internet service here. It uses a printed card that connect locally to a windos vista home pc. From there on, the connection is shared and that the pc is connected to a linksys router. The router, then hosts a wireless network and hard line connections. About three weeks ago, the Internet stopped working except the computer, map of sprint is hung directly. I tried the following options below to solve the problem.

  1. I can plug the card sprint to any computer and it works.

  2. I replaced the network adapter on the host computer

  3. I have tried the card sprint on other computers and tried to share from there. Same result

  4. replace the router

  5 opportunity anotehr card Sprint which has been known to work

  6. replace the network cable between pc and router

  7. I tried removing the router from the equation and ran a network of host pc card form for directly to another computer

  8. the host and also renovated of other computers reformated

  9. do you have an ipconfig/release and renew

  10 tried sharing all NICs on the host PC

  When sharing the connection, I can see all the computers on the network. They arise, there is simply not an internet connection.

  The only mistake that I seem to get is not able to find the DNS. I put everything on dhcp.

  Any ideas that anyone can come would be most appreciated. Thank you

  Hello

  Step 01:

  I suggest you follow the same steps as expected here to set up the ICS (Internet Connection Sharing) host computer:
  http://Windows.Microsoft.com/en-us/Windows-Vista/set-up-a-shared-Internet-connection-using-ICS-Internet-connection-sharing

  Step 02:

  I also suggest you to follow the link and check.

  http://Windows.Microsoft.com/en-us/Windows-Vista/change-Internet-settings-for-ICS-Internet-connection-sharing

  For more information, please follow the link.

  http://Windows.Microsoft.com/en-us/Windows-Vista/using-ICS-Internet-connection-sharing

• Why can't I share an internet connection?

  Currently my Windows 7 laptop is connected to my computer from Windows Vista desktop with a CAT 5, as to share cable internet. For hours I tried to find a way to connect the computer to the internet, but even after following the same instructions of different sites over and over, my office cannot connect to the internet. I know it's possible, until I'm doing wrong?

  Pics:
  Windows 7 network and sharing screen: http://i.imgur.com/o9GUc.png
  Windows Vista network and sharing screen: http://i.imgur.com/nGKwC.jpg
  Windows 7 Internet connection sharing: http://i.imgur.com/2Vq48.png

  Make sure you have a pci extra slot for an adapter if this is the way you choose.

  Go to the computer manufacturer's website and search for your office specifications.

• WRT 1900ACS removes wireless LAN file transfers and internet connection

  I have WRT1900ACS which is declining by almost every file transfer wireless LAN I get out of a wireless laptop to a PC connected by cable; So far, I'm using the latest firmware version: 1.0.1.174588 and both are version of Windows 10 PC 1607.

  When I transfer a lot of small files, the transfer stops after about 2-4%, drops wireless connection and the adapter will not reconnect. I have to restart the wireless computer to get the wireless adapter to connect again.

  This would seem to indicate a problem with wireless network card driver. The same id of the event was logged in the forum thread below:

  http://www.techsupportforum.com/forums/f338/Windows-10-wireless-drop-out-1057898.html

• Questions of ESXi 5.1 ISCSI--> cannot establish a network connection (continued)

  Hello world

  I had a problem there not too long ago (thread link below) where my ESXi hosts could not establish a connection with an IBM DS3500 on start up and "rescan", however their connectivity worked correctly without any problem after commissioning and when a "rescan" finished. We determined that the most likely cause was the unit IBM itself. However, I wasn't completely satisfied.

  In order to deepen the question and dismiss my guests being the problem, I created a unit ISCSI myself with two new hosts of ESXi 5.1 (version 1157734).

  ESXi signals that it cannot connect to the initiator ISCSI (network error) - but it can run virtual machines and browse data stores?

  The configuration is the following:

  Test environment:

  2 x ESXi 1157734 hosts

  1 x server Freenas ISCSI (ZFS R10)

  At the start of my ESXi hosts in the test environment, download the same error as our production environment. They also put on the same error message (in the event log) when I "rescan" map of the ISCSI software. However, once the scan is finished, I can't see any error message and everything continues as it should (Round robin, active active). I can get a brilliant flow also. It's as if the errors are almost... false positives?

  Example of the error message (test environment):

  Connection to the iSCSI target

  IQN.2011 - 03.org.example.istgt:iscsi on vmhba35

  @ vmk2 has failed. The iSCSI initiator couldn't

  establish a network connection to the target.

  error

  17/10/2013-08:33:35

  ESXi hosts are configured as follows:

  Test environment:

  • (ESXi hosts) Two network cards for ISCSI, one for VM traffic
    • NIC1: 10.20.20.2/24, NIC2: 10.30.30.2/24
  • (Freenas) Two network cards installed on the ISCSI device (dedicated to ISCSI traffic)
    • NIC1: 10.20.20.1/24, NIC2: 10.30.30.1/24
  • ESXi is set to round robin, which works properly (I can max on both ports at the same time)
  • Two VMKs are related to the ISCSI Software initiator and defined to dynamically discover the two ISCSI addresses
  • Unity of ISCSI and the hosts are not on the VLAN, the switch is dedicated to ISCSI traffic (However in the production, the two networks are separated by VLAN.) I removed the in the test environment to simplify everything)
  • The vSwitches (who hold a single VMK for ISCSI) are fixed:
    • "Promiscuous" mode: reject
    • Change of MAC address: accept
    • Forged passes: accept
    • The traffic shaping: disabled
    • No NIC teaming (obviously)
    • Each VMK inherits the settings of these

  Quick points:

  • My hosts use VMware approved NIC in my test environment. My production environment runs on full VMware hardware approved
  • Can I use ping of vmk join each each VMK ISCSI initiator
  • I can use the nc-z target_ip 3260 command to check connectivity to the port
  • The ISCSI test has two network adapters, each on 1 Gbps ports
    • I can get around 800mbps per port when copying lots of files (both ports are active)
    • I see no error in copying a large number of virtual machines around, or backup files
  • I only see errors on start up and "rescan".
  • I have two network adapters on each host ESXi dedicated for ISCSI. Each NETWORK card has a single VMK. A single mapped port on ISCSI, the other is mapped to port B (I used to have two VMKs by nic, but I removed that in order to simplify everything)
  • I have updated the firmware on our switch of production. No results
  • I've used 4 different switches in order to avoid a network problem. No results
  • I tested ESXi versions 5.0, 5.1 (799733 & 1157734), all have the same mistakes
  • The ISCSI ports are on different networks according to the VMware (I was told not to put on the same network VMKs)

  Any ideas? It's starting to drive me up the wall. Any help would be greatly appreciated

  I've seen several times in recent months and was beginning to think it is specific to the HP P2000 units because it's the only time wherever I saw him! I now believe that ESX/iSCSI rather than issues of driver or table.

  On my last install, I found that errors occur as soon as the table is connected, i.e. before any storage is displayed.

  Single host ESX, no guests. 2 Intel adapters to 2 HP past by dedicated HP P2000 1 GB table with all 8 wired ports.

  All roads are good, all lights are in the State expected.

  It did not affect the use of the storage in question to any site, so there has been no need / a momentum of any further investigation.

  B! 886y annoying however!