I have a Kodak All-In-One printer/scanner that I have been using with my 64-bit Win 7 Ultimate machine since I built it. About a month ago, I went to use the scanner portion of it by way of the Kodak software and kept getting a "communications error" that prevented me from scanning. The scanner was fine because I was able to go into MS Paint and invoke a scan from there. I finally solved the problem by opening the "Advanced" properties of the shortcut for the Kodak software and checking "Run As Administrator".
Last night I purchased a new Brother Laser printer and installed it. I could print fine but when I went to scan the software told me it could not find the printer. Diagnostics told me the scanner driver
installation had failed and for me to uninstall and re-install the Brother software suite. I did that but still got the message that the printer could not be found. I remembered what I did to fix the Kodak printer last month so did the same with the Brother software and now I can scan from my PC.
Has anyone else encountered this? I've had a scanner attached to my Win 7 computers since Win 7 first came out and have never needed to do this until recently. What changed?
At any rate, if all of a sudden you aren't able to scan anymore, try setting the scanner software to "Run As Administrator".