Okay...here's the solution to the scan problem which I had.
My problem was that I couldn't scan, but I could print.
Lexmark was no help as the issue isn't with Lexmark but your computer's
ability to send/receive instructions from that device, which is apparently
what you need the .NET Framework for.
After several hours of trial and error, I found there's a "correction tool"
software download at microsoft for the .NET Framework software. Apparently
this is nothing more than a registry error on your system as regards the .NET
Framework.
I tried uninstalling the .NET Framework thru add/remove programs. The
system wouldn't let me. I tried a repair thru the add/remove programs.
Again the system wouldn't let me.
All your .NET Framework updates need to be working properly...so make sure
you have all the latest updates from Windows Updates.
I finally found a "fix"...it's a correction software patch thru Microsoft.
Sorry but I didn't save the web address for it. There's 3 different patches
(fixes)...I don't know why. So I tried all 3. The first 2 said they
couldn't do anything for me...wouldn't install. The 3rd patch fixed the
problem with my Lexmark so I could now scan in documents. The fix was
immediate.
So, I would first go to Windows Update and make sure you have the latest
updates. If any of them fail to download and install, do a search right
there on Microsoft (top right hand corner) for that software update...then
look at the search results for fixes for failure to download that update.
You should find the correction software patch there.
Sorry I didn't save the exact addy for the fix....but I was so frustrated
after hours of trying to fix this problem, and had tried so many things,
that I was losing hope by that point.
Jim