Registry. Write access lost to the c:\Users folder and subfolders.

Dear all,

The error described below occurred only after I had used regedit.

I messed up the uninstall (I had to use rmdir/s) of a compiler (Delphi), and the only way out thereafter, was to use regedit. All keys that referred to that compiler --- certainly numerous --- were deleted.

Of course I removed too many and now I meet a few difficulties. Here is the current one (the first one was a lost Windows default "path")

The compiler writes warnings and errors to a log-file under Appdata\Local\Temp. Now, the compiler is run from within my text-editor, which normally erases this log-file upon exit if the compilation was successful. The following message now follows:

Cannot delete output file c:\Users\gustaf\Appdata\Local\Temp\29456.err

So the failure to erase the file is my problem. Any suggestions?

I have tried google and only found suggestions that the permissions for the current folder must be checked: both the administrator and myself (only user) have all permissions.

Best regards,
ChG

Worth running a system restore from the advance boot options pal.

"advance boot options pal" Cannot follow. Could you please direct me a bit more explicitly.

OK. Googled it. But the advanced mode is it not mostly to check drivers, and not to fix registry?

System Restore Windows 10

System restore restores most files apart from files in the user folder.

Worth a shot buddy first off.

Your suggestion is a "system restore": you select a previous restore point which you know was made when Windows was "healthy". Unfortunately there is not even a single restore point in my PC, because the option has been turned off ever since the installation.

Since Windows erratic behaviour is related to my stupid changes in the registry, and modifications herein is of less interest to the general user of the Windows OS, I think it is time to terminate this thread.

Without any joy I now look forward to a complete reinstall of Windows.

Sorry to have bothered you folks,
ChG