I have about 10 licenses for Adobe Acrobat Pro 9 that have stopped working on my Windows 10 machines a few months ago.
They all give the error: "Licensing for this product has stopped working. You cannot use this product at this time. You must repair the problem by uninstalling and then reinstalling this product or contacting your IT administrator or Adobe Customer support for help. (147:20)"
I've tried uninstalling/reinstalling. I've tried repairing. I've tried compatibility mode. I've downloaded and installed all the updates and patches for Adobe 9 up to 9.5.5. I tried everything on this help article: Error: "Licensing has stopped working" | Windows and nothing has helped. I'm not sure if it was an Windows update or what that broke it. Seems like everything was running fine and then one day they all just quit working. They still run fine on my Windows 7 machines, but I'm trying to migrate all those to 10 in the next few months and then I won't have it working on any computers.
Any suggestions that aren't buying newer versions of the software?
As per the issue description mentioned above, you are facing issue licensing issue with Acrobat 9 on Windows 10 machine, is that correct?
Acrobat 9 is not compatible with Windows 10 so problems with it are to be expected. Refer to this link for more info: Older versions of Acrobat (XI, X, 9) system requirements
You may try deactivating Acrobat using Help > Deactivate then removing Acrobat 9 using cleaner tool found here: Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs , restart the computer and then reinstall Acrobat.