"Request not supported" says any program that requires elevated administrator rights.

[SadmanTariq]

Yesterday I posted this thread on r/TechSupport. I got no response but I think I might have figured out what the problem might be.

When I tried installing MS Office 2016 Professional today, the gray background, the one that comes when a program requires elevated administrator rights, came up for about a second and disappeared and showed an error message saying "[insert program path here] This request is not supported."

This also happened when I tried re-installing realtek hd audio manager and Google Chrome.

But I don't know how to fix it. For additional details please read the reddit thread mentioned above.
Any help, useful or not, will be appreciated.

Thank You.

 

[Colif]

can you right click start
choose run...
type winver and press enter
what version of win 10 are you on? Current is 1703, build 15063.483

If you are on that version, you might want to try a repair install: https://www.tenforums.com/tutorials/16397-repair-install-windows-10-place-upgrade.html

Another fix that might work is this
I would get you to run sfc/dism in normal mode but it requires admin rights. Instead, we can try it in safe mode and see if it works there without admin rights (not sure)
go to settings/update & security/recovery
under advanced start up, click restart now button
choose troubleshoot
choose advanced
choose start up options
hit the restart button
choose a safe mode (it doesn't matter which) by using number associated with it.
PC will restart and load safe mode

now open command prompt and type SFC /scannow and press enter
once its completed, copy/paste this command into same window:
DISM /Online /Cleanup-Image /RestoreHealth and press enter
SFC fixes system files, DISM cleans image files, re run SFC if it failed to fix all files and restart PC