receiving the message "unable to communicate with the TWAIN device.

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  I have a HP Officejet 6500 a Plus E710n-z.  He has in the past, but is no longer connects (by wireless) to my computer (Apple OSX 10.8.4).  It became intermittent in the last month, and then did not answer at all.  I had a growing list of items to be printed.

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  The printer has been disconnected (deleted) as the printer from the computer.  I was able to add in the part 'scanner' printer, but cannot add to the printer - it has the message "unable to communicate with the printer.

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  I you sent a private message with the steps you need to perform the reset.

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• ScanJet G3110 - 'unable to communicate with the scanner' error message

  This Scanjet has worked well over the years.

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  Hello nikhil_gupta

  The Scanjet series of scanners is of commercial products. I suggest you post in the HP Business Support forum for a better chance to find a solution, because it's the boards of HP for the consumer and there are people less familiar with this product range.

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• Unable to communicate with the printer HP 4630

  Continue error message of "Unable to communicate with the printer." Even when connected by USB.

  Have reinstalled the software several times, checked the wireless (no problem), printed many pages of configuration directly from the printer.

  I keep trying to add the printer to my preferences. One thing is that it will only add like a scanner or fax, a PRINTER. It is also called Hello Scanner. Why can't I add as a printer?

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  Hi @PKahn

  It seems that the computer does not recognize the print driver.

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• HP Officejet Pro 6830: Unable to communicate with the Scanner

  Printing is fine and just impossible to scan.

  I tried to solve the problem of scanner/copy of the measures:

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  3A through the steps with all green ticks, with the exception of the driver with a «!»

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  Hi @Flash1688,

  Welcome to the HP Forums!

  I see that you are unable to communicate with the Scanner with your HP Officejet Pro 6830 on Windows 8.1. I'm happy to help you!

  If you just try to make a copy with the printer, it works? You see on the screen of the printer error messages? Copy of Documents. Also, if you lift the lid of the scanner during the copy process, you see a light come ON and the scanner bar moving?

  In the meantime, please, try the procedure described in this guide, a message 'no computer found' for HP Officejet 6810 and HP Officejet Pro 6830 e-all-in-one printerand let me know what happens!

  I hope hear from you soon!

  "Please click the Thumbs up icon below to thank me for having responded."

• Error: "unable to communicate with the TWAIN device" with brother MFC7820N

  Original title: can I connect a scanner through a switch?

  I'm trying to analyze something like I did it many times with my brother MFC7820N hung on my tablet. But recently, I replaced a 2nd router I had in my system that failed with a new Dynex switch.

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  So today I open PaperPort and click the Scan button and it appeared an error saying unable to communicate with the TWAIN device box.

  So I clicked on a doc shown in PaperPort that I had scanned a few weeks ago and I click right and select Print and printed to this MFC7820N.

  Then I come back to click on scanner again and yet again, it appears that box. So I watch and WIA-Brother MFC-7820N LAN is displayed in the Scanner marked drop-down list box. So I switched the power of the MFC and tried again and it still appeared that same box again.

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  Hi Jeff has Davis,
   
  Method 1: Uninstall and reinstall the driver again and check if it helps fix the problem.
   
  See this article for more information:
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  Method 2: Try the suggestion given in this article:
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• Error "" unable to communicate with your printer - this may be due to a firewall - check port TCP/UDP 139 is unlocked - reconfigure the firewall.

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• error: unable to communicate with the printer

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  Looks like you can set up a standard port and print ok from a print server.  The UPD in the stream you describe will attempt to make multiple calls SNMP to determine the abilities of the printer, and those who are failing, causing the UPD to throw the error you see.

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• Unable to communicate with the printer hp deskjet 1000

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  My problem was solved by removing and reinstalling the drivers... .any way thanks for your help

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