Reverted from v. 2004 to 1903, install problems now

I updated to latest windows 10 fall feature update, v. 2004. The update went fine, but I noticed some programs performing slowly and had some major graphics glitches. After checking that all my drivers for video were updated to latest and finding no improvement, I decided to revert to 1909.

This I did and it notified me I would need to reinstall some apps, but otherwise no problems.

First, I could not run nor reinstall Firefox. It kept calling for C++ runtime 2015 Runtime. However, anything I did to resolve the issue has not seemed to help. Since Edge still worked, I was not without options, but frustrating.

I've run the install troubleshooter, and it says it patched some corrupted reg keys. I tried manually downloading some missing file(s) and pasting them in, and the system did not recognize them.

I continue to get the message: Network Resource Unavailable, please try again or select another location.

I did get past this message for 2015 one time when I had trouble running another program, but it then balked looking for 2019 runtime with the same issues.

Upon restart, I am returned to 2015 Runtime missing for Firefox install and 2019 when trying to run a game. I've attached some simple pics.

Does anyone have any advice on this?

Oh, I also ran system file check and repair, and while it stated it repaired many files, the problem persists.

Thanks so much for your help in advance. I hope I gave good info to diagnose with. Please let me know anything else I can provide.

I am hoping this is a common issue when reverting to a previous build and there is perhaps a simple solution?

If not, would you recommend I try going forward to 2004 again and working the problem from that end, if I am able?

Hey Jacee!

Thank you so much for your assistance. It looked so good, loading through all until 2015-2019. I then received the same error messages.

As I searched for the specific file call being named for a target, ...nimum_x64.msi, I found the thread at this link which may not be exact as a answer, but perhaps seems to hold some wisdom?

https://social.msdn.microsoft.com/Fo...annot-be-found


In it the response is that the problem isn't in the programs seeking to be installed, but that the installer is trying to uninstall an older version, but is failing when it can't find it, or something to that extent?

I don't know that I can identify which precise installer or version I might need to find, or if this is even something which is relevant here, but I thought I'd include it in my update. As it stands now, I don't have the appropriate file/folder or path to direct it to.

I remain hopeful, and thank you again for your time, praying for ever more insight from the wonderful knowledge base found here.

Thanks!