# Error "windows cannot open this file. to open this file, windows needs to know what program you want to use to open it"appears just after the start on its own.

After that I typed my password at startup, windows can not open this file. to open this file, windows needs to know what program you want to use to open it.  At this point, I have no one based on nothing and and messages appear literally on its own. I think it's done my computer very slow also.

What can I do to fix this?

It's a site file

Hi Jose7777777,

• What version of Windows are you using?
• How long have you been faced with this problem?
• Did you do changes on the computer before the show?

Follow the suggestions below for a possible solution:

Step 1: Start in safe mode and check if the problem persists.

Start your computer in safe mode

http://Windows.Microsoft.com/en-us/Windows7/start-your-computer-in-safe-mode

Step 2: If the problem does not occur in safe mode, you can put your system to boot (in normal mode) to solve the problem.

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.Microsoft.com/kb/929135

Note: After troubleshooting, be sure to set the computer to start as usual as mentioned in step 7 in the above article.

You can also view the startup folder.

I hope this helps.

Tags: Windows

### Similar Questions

• Cannot open files or programs, error: Windows needs to know what program to use.

Original title: I can't open any programs.

Today, I tried to free up space for some games, I tried to download. In the Remove Programs process I must have learned something really important. Now, all of the icons on the desktop are white and I can't open anything. None of the programs, folders, files, photos. The pop up according to open this file, windows needs to know what program to use. It does give me an option to choose a program and I can't open my internet browser unless I have to go through some point average round through my control panel. If there is a way to solve this problem, it would be really useful. I think that the computer uses Windows Xp.Thank you

Hello

Method 1

Cannot open files with extensions such as.exe, .com, and.lnk on a Windows XP-based computer
http://support.Microsoft.com/kb/923077

Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article: http://support.microsoft.com/kb/322756

Method 2
I suggest you run virus scan online by using the Microsoft safety scanner.

Microsoft safety scanner
http://www.Microsoft.com/security/scanner/en-us/default.aspx

Note: when you do an antivirus online, you will lose data that are affected by the virus. Microsoft is not responsible for the loss of this data.

Method 3
I suggest you try the steps from the following link:

How to change or choose the program that starts when you double-click a file in Windows XP

http://support.Microsoft.com/kb/307859

Method 3
If you still have problems, check in a new user account

How to copy data from a corrupted to a new profile in Windows XP user profile
http://support.Microsoft.com/kb/811151

• Cannot open file because Windows needs to know what program created the file

After downloading some files when I try to open the file, I get the message cannot open the file, windows needs to know what program created the file.

Any suggestions?

Perhaps no program has been assigned to this file format and so you cannot open these files.
I put t know which files you downloaded, but you can choose an application installed that can open these files.

Right click the file and I have to then choose open with.
Then, you could choose the program you want to use.

Best regards

• I get the message asking me what program I want to use to open the program

When I'm online and I try to change the programs, such as clicking 'send' or any change of clock, I will get a window with about 6 choices that says: "what program you want to use to open this program" no matter which one I try, I got nowhere. This all started 4 months ago. How can I get rid of this nuisance.

Thanks, Dan

Hello

(1) do you have made no changes before this problem?

(2) what operating system do you use?

Method 1:

Step 1: I suggest you perform a clean boot before run us the fix it.

Clean boot

How to set up Windows 7 to start in a "clean boot" State

http://support.Microsoft.com/kb/929135

Note: After a repair, be sure to set the computer to start as usual as mentioned in step 7 in the above article.

Step 2: Cannot open. EXE in Windows 7 or Windows Vista http://support.microsoft.com/kb/2688326 files

Note: Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base: 322756 (http://support.microsoft.com/kb/322756 /) how to back up and restore the registry in Windows

Method 2:

Step 1: Run the antivirus in safe mode

http://Windows.Microsoft.com/en-us/Windows7/start-your-computer-in-safe-mode

Step 2: Microsoft Safety Scanner

http://www.Microsoft.com/security/scanner/en-us/default.aspx

Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

Let us know the results.

• Application not found error-choose the program you want to use to open this file

Soon all the world.

I really hope that someone will post a reply to my question as soon as possible. I will try to be as descriptive as I could possibly, in order to solve my problems.

The main problem is that I can't open some, if all the program files, applications on my windows 7, 32-bit laptop. I'm constantnly get application not found error, showing in a small window address, I was trying to do. Whenever I want to open a program, like the Adobe reader, word of microsoft, excel, mozilla firefox, google chrome - basically everthing, a window opens and is telling me this: choose the program you want to use to open this file: file: acad.exe... and recommend me acrobat from adobe program, any program I was trying to enter (in this case autoCAD).

Cannot open cmd, when I go to system recovery, it says: System Restore could not start. I normally post records in: C and: D sheet music, play music, watch videos and see photos. I found a "hole" not being able to go to the internet via a browser. I discovered it when I went to an online help in some of the trobleshoots. It would open tab in google chrome by itself and then on it, I can browse the internet normally, but only through the said track.

Currently, the microsoft security essentials performs a custom analysis (: C and: D), because I suspect it is a malware, or some kind of virus. It happened when I tried to download a program from CAD Solidworks 2012 via a site that I'm not sure I'm allowed to mention, that I don't want. Unless it's okay with you :) It begins with a letter t. By the way, I noticed that my: partition D has accumulated 10 GB + more in the space of a few days, because I remember two weeks ago I had close to 70 GB of free space, now it's about 56.3 GB. Curious, because I know that I did nothing so great in this period. Maybe I need to tell you that I get this window, from time to time, when I browse the internet (I never visit suspicious sites, or at least I don't me remember more I visited one in a very long time, like 4-5 months):

I found this in my story, be very careful what you do with this link, I don't want that take you anything ;)

Good bye!

P.S. forgot to mention that when I download a program (mozilla Firefox), I can not run it due to: Application not found. I hope I found the right place for it.

Original title: Windows 7 - Application not found. A big problem or easy-peasy?

Hello

Thanks for posting your query in Microsoft Community.

1. What is the complete error message you get when opening a file?
2. What happens when you try to open the command prompt?
3. What happens when you try to access the internet by using Internet Explorer?
4. You did changes to the computer before the show?

According to the description of problem errors you get "application not found error" and "choose the program you want to use to open this file" and not being is not able to do system restore, it seems that some windows file is corrupted. I also suggest you to post back the results of analysis.

I would suggest trying the following methods and check if this is useful:

Method 1:  Run SFC scan and check for corrupted Windows files and violations of integrity.

Use the System File Checker tool to repair missing or corrupted system files

http://support.Microsoft.com/kb/929833

Method 2:

For any question, where his prompting you to select the default program
Try to set the default values for the program
Change the programs that Windows uses by default

For any question, where you are not able to download and install firefox, download the file and save it and then try to install firefox.

I hope this helps. Please let us know the results. Feel free to write us again for any help.

• Cannot open .exe programs in XP except MS IE - ask "open with - choose the program you want to use to open this file.

Any of the My .exe programs such as office, Firefox, Skype can be opened from desktop file icons or programs. Request to the dialog box opens: "open with, choose the program you want to use to open this file" - but only lists MS programs that don't work, or "error - Application not found". Only the program that works is MS IE.

Looks like your Windows file associations have to dispose. This means that XP is not
know what to do with the files by looking at the file extension (for example, .exe for executables,
.doc for MS documents, etc.).

If you don't have it you, something done for you - most likely malware.

Go to this site WWW by Doug Knox:

http://www.dougknox.com/

On the left, click on the Win XP fixes, file Association fixed and read the instructions at the top of the page.

Download the EXE File Association Fix on your desktop, unzip the file and apply it by following the instructions at the top of the page, then to restart and test.

Run the following scans for malware, and then fix any problems:

Download, install, update and do a full scan with these free malware detection programs:

Malwarebytes (MMFA): http://malwarebytes.org/
SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
They can be uninstalled later if you wish.

• Internet explore and google chrome says to choose the program you want to use to open this file

Original title:

I can't open my internet explore and google chrome it says to choose the program you want to use to open this file... file? HELP PLZ

Help me

Hi Ariep,

When you run an .exe on a Windows Vista-based computer file, the file can start another program. In addition, the icon of the file .exe may not appear as expected. You can also receive additional errors in the .exe file or the program that starts.

To resolve this problem, try the steps of: When you run an .exe file on a Windows XP, Windows Vista or Windows 7 computer the file may start another program

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs.

http://Windows.Microsoft.com/en-us/Windows-Vista/back-up-the-registry

Please post back with the State of the question.

• "Choose the program you want to use to open this file" appears every time

When I click on any program /function, this window opens each time "choose the program you want to use to open this file. For this reason, I am unable to access many programs. No matter what I do it won't go away. Any help is appreciated. - rezé

Hi Raju,

This problem could be due to the corrupted on your computer user profile. This corruption can be caused by a virus on the computer, or it could have been corrupted for some other reason.

Method 1: remove the virus could help us solve the problem. You can download Microsoft Safety Scanner and run a full scan to detect any virus/malware infection.

Microsoft safety scanner

http://www.Microsoft.com/security/scanner/en-us/default.aspx

Note: The Microsoft Safety Scanner ends 10 days after being downloaded. To restart a scan with the latest definitions of anti-malware, download and run the Microsoft Safety Scanner again.
Method 2: create a new user account.
I suggest to create a new user account and check if that helps. Here is the link that will help you to create the following user account: create a user account
If the problem is resolved in the new user account, then the old user profile is damaged. Here is the link to repair a damaged user account

Method 3: run the Fixit tool below to fix the. EXE file association error.
http://support.Microsoft.com/kb/950505

Hope this helps you. Let us know anyway!
• When you try to open a program, get the area "Choose the program you want to use to open this file".

When I try and open a program I get the box "choose the program you want to use to open this file. Also, when I try and access any of my icons in my control panel, I get a message saying 'C:\WINDOWS/system32/rundll32.exe. Aplication not found. "

Uninstall mywebsearch toolbar, Zynga, my fun cards

Check these then check fix checked. Narrow browsers

O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)

O3 - Toolbar: (no name) - {CCC7A320-B3CA-4199-B1A6-9F516DD69829} - (no file)

O4 - HKLM\... \Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe

O4 - HKLM\... \Run: [HP Software Update] C:\Program HP HP Software Update\HPWuSchd2.exe

O4 - HKLM\... \Run: [MyWebSearch Plugin] rundll32 C:\PROGRA~1\MYWEBS~1\bar\1.bin\M3PLUGIN. DLL, UPF

O4 - HKLM\... \Run: [my Web Search Bar scope monitor research] "C:\PROGRA~1\MYWEBS~1\bar\1.bin\m3SrchMn.exe" / m = 2/w/h

O4 - HKLM\... \Run: [MyWebSearch Email Plugin] C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwsoemon.exe

O4 - HKLM\... \Run: [SunJavaUpdateSched] "C:\Program Files\Fichiers Java Update\jusched.exe"

O4 - HKLM\... \Run: C:\PROGRA~1\MYFUNC~2\bar\1.bin\c8brmon.exe [MyFunCardsbarIE Browser Plugin Loader]

O4 - HKLM\... \Run: [TkBellExe] "C:\program files\real\realplayer\update\realsched.exe" - osboot

O4 - HKLM\... \Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0-k

O4 - HKCU\... \Run: [BitTorrent DNA] "C:\Program Files\DNA\btdna.exe"

O4 - HKCU\... \Run: [BitTorrent] "C:\Program Files\BitTorrent\bittorrent.exe".

O4 - HKCU\... \Run: [MyWebSearch Email Plugin] C:\PROGRA~1\MYWEBS~1\bar\1.bin\mwsoemon.exe

• Whenever I try to open or run all I get "Choose the program you want to use to open this file" and by default, Adobe Acrobat

Whenever I try to open or run all I get - choose the program you want to use to open this file and its default Adobe Acrobat and he always answers this file type is not supported.  I can't open anything on my desktop, tried to reinstall Java, and even in my computer it asks me to choose a program to open it. Help!   I don't know what is happening!

* original title - try to refresh, to run or install anything whatsoever, and it will not open executable files.*

Hi LisaPisani,

(1) did you the latest changes on the computer?

(2) when was the last time it was working fine?

Method 1

See the Microsoft article below and try the steps mentioned, check if it helps.

How to change or choose the program that starts when you double-click a file in Windows XP

http://support.Microsoft.com/kb/307859

Method 2

If the previous step fails then I would suggest that you perform the system restore point when it worked very well and check if it helps.

How to restore Windows XP to a previous state

http://support.Microsoft.com/kb/306084

• Not able to open programs 'open with' appears with the message "choose the program you want to use to open this file."

Original title: what is savagent.exe.

I started having trouble opening all my programs...  A 'Open with' box appears only the message "choose the program you want to use to open this file: file: * .exe ', and I only have two choices, either Microsoft Office OneNoteQuick Launcher or Wordpad...  Since none of them are the program that I want, I click on the Cancel button, the popup disappears and the program does not open.  Internet Explorer is the only exception it opens when I click on Cancel.

I am running Windows Vista on a Dell 1525.  I did a general online search, but the concflicts information too for me make sure my best option.

Thanks for considering my question.

You said open with dialog box appears whenever you try to open a program?

If so, try this...

http://forums.techguy.org/Windows-Vista/899995-solved-Open-box-opens-every.html

Scroll down to the answer given by Phantom010:

quote...
Try this registry fix: EXEFIX

Unzip the patch and extract it. REG file on your desktop. Right click on the REG file and choose Merge. Note that you must be an administrator to apply this hotfix.

Reset.
• HELP-I can't open things such as the restoration of the system or the command prompt, etc without being asked to "choose the program you want to use to open this file"

HELP-I can't open things such as the restoration of the system or the command prompt, etc without being asked to "choose the program you want to use to open this file"

so boring

Hello

Download and run the fixit tool from the link below and check if this solves the problem.

http://support.Microsoft.com/kb/950505

Kind regards
Afzal Taher
Microsoft technical support engineer

• BUG: Stop asking me what program I want to use it to open images in Windows 10

Yes, there is another thread on this, but it has an accepted answer that does not solve the problem.

In Windows 10 whenever you click on an image in Skype, you get an annoying screen asking what program you want to open it with. I have put my flaws so stop show and simply open the image.

No, this isn't my file associations are not set up. I got them, I can double click on the images in the file Explorer and they just open, other programs can do that too.

I even wrote a simple c# program

Process.Start(@"IMG_03112015_100918.png");

who has managed to open the image upwards with my associations - prove that Yes, you can do it programmatically.

Windows changed how some API worked? Obviously. But you can bypass. It's something that should be fixed before Win10 went live. The fact that months later it is still a problem reflects really badly on Skype.

Yes you did! Skype 7.14 works as it was intended!

• Whenever I try to open a file that I have to choose what program I want to use to open it with

origintal title: open with

Whenever I try to open a file that I have to choose what program I want to use to open it with, is there a way to stop this?

Whenever I try to open a file that I have to choose what program I want to use to open it with, is there a way to stop this?

http://forums.techguy.org/Windows-Vista/899995-solved-Open-box-opens-every.html

t-4-2

• Message: "choose the program you want to use to open the file" when tried to open msconfig

Original title: msconfig does not work

I ran msconfig and erased everything in selective startup to get rid of some programs; now, anything (including msconfig) open - I just get the window asking you to "choose the program you want to use to open the file.  How can I go back into msconfig access selective start up again?

Hi willnvail,

Try these steps and check the result.
Step 1: Reset changes
a. visit http://support.microsoft.com/kb/837334
b. all the steps in the above article for Windows XP and check if the problem persists.

Step 2: If the problem persists, restore the computer
see How to restore Windows XP to a previous state .
b. check if the problem persists.

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