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Total Permissions reset for Windows 10 default permissions on local drive C:\. Icacls.exe fails my system reset while testing its full functionality with manual created permissions issues.

Anonymous
2020-09-15T19:46:50+00:00

Hello I was trying to learn how to reset permissions on Windows 10 under advanced security. The owner of my C: was not my name it was listed as Trustedinstaller, I wanted to correct this and made a change to my username that is the Administrator. Once this completed I was locked out of my task bar. I tried to use Icalcs to reset the permissions but this does not work. 

went to test a total reset under the Icacls.exe with admin this is the command what it does

preformed icacls reset in powershell to test this functionality seems it fails for windows 10 preformed for each folder to reset them 

It ran perfectly to test this functionality 

however..... no more task bar...

I ran SFC /scann now this did not fix it also reset the taskbar with powershell. 

where is a total premission reset to default admin and users of windows. If this fails why do we have the option to change this under all of C:? 

what is the reason we can change and take control of this over trusted installer if it causes system critical issues?

Icacls.exe failed to reset and fix premissions.

Windows for home | Windows 10 | Performance and system failures

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Igor Leyko 111K Reputation points Independent Advisor
2020-09-15T23:35:46+00:00

So is your problem solved?

Unfortunately local admin with physical access to PC may do a lot of dangerous things, otherwise it will not be admin.

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  1. Igor Leyko 111K Reputation points Independent Advisor
    2020-09-15T20:19:33+00:00

    Recycle bin is corrupted so there is a need to clean it. You do not need disable Bitlocker if you can run command from elevated command prompt.

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  2. Anonymous
    2020-09-15T20:09:55+00:00

    Thank you testing now. Do I need to disable bitlocker before this command, this immediately gave me a recycle bin error also. 

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  4. Igor Leyko 111K Reputation points Independent Advisor
    2020-09-15T19:59:39+00:00

    Hi Jonathan,

    I'm Independent Advisor not Microsoft employee or support person. But I'm in contact with Windows developers since 1995 - as a one of the best Windows beta-testers till 2009 when program was closed, as an MVP in 2005-2017 including Windows System & Performance nomination. So I have deep enough Windows knowledge and you may trust me. It's a pleasure for me to help others and I'll do all my best to help you.

    Try to run

    icacls c:\* /Reset /t /c /l /q

    command from elevated command prompt.

    The reason is in impossibility to provide full protection from unreasonable behaviour unfortunately.

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