Hi noxy,
Which program are you trying to uninstall?
One possible option is to enable the hidden administrator account and then try the uninstallation.
Note: You really shouldn’t use this account for anything other than troubleshooting. Disable this account once you’re done with the troubleshooting. If you want to keep the built-in Administrator account, it is recommended to create a password for it to help keep it secured.
Enable Built-in Administrator Account
a. Go to start and type “cmd” without the quotes in the search field.
b. Right-Click on cmd and select “Run as administrator”.
c. In the elevated command prompt, type the following command without the quotes and press Enter.
“net user administrator /active:yes”
Close the elevated command prompt.
d. Log off, and you will now see the built-in Administrator account log on icon added in the log on screen.
e. Click on the Administrator icon to log on to the built-in Administrator account.
To disable the account, type “net user administrator /active:no” without the quotes and press Enter in the step c above.
Regards,
Shinmila H - Microsoft Support
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