No osund after FP v 10.1.85

The referenced page contains a lot of very helpful in-depth information.

I don't know if  FP or if Windows changed something after installing FP 10.1.85.3 but until that update, all was working perfectly.  I did NOT change any settings or configurations nor did I install any other software other than the update. I did absolutely NOTHING except allow the Adobe update to proceed by clicking teh button Adobe provided. Period. That's pretty compelling evidence that the problem was caused by the update install.

My best solution was to do a Sytem Restore where I rolled back to the last know good configuration just prior to the upgrade install.  Now everything works perfectly again, so that's further evidence that it had something to do with the install process.

After I posted I did more research and I found that this loss of sound after an upgrade goes back at least three years. It was occurring with FP 9.x and WinXP in 2007 and earlier and has to do with registry changes...whether it's by Adobe or Windows is unclear. But the solution in nearly every case was the same....revert to an older verison of FP.  That was why I ran the System Restore after posting.

What's also clear is that this is a known, well-documented issue and neither Adobe nor Microsft is doing anything about it. I don't know whose "fault" this is but as a user I want to see it fixed rather than leave it up to me to do some rather high-level recovery work. Adobe's customer service is poor and trying to find a solution on user forums and sites for this issue is difficult.  Even with all my my searching I never found your excellent post.

Thank you for your help, it is greatly appreciated !!