Howto Restore the ownership of jscript.dll to the TrustedInstaller?

You can change the owner with the Security dialog window.  But it is true, after you change it, you have to back all the way out and start over to change the permissions..

You could probably check one of the other files to see what the permissions are.

Hi!

Thank you for the advice and giving me hope that I can solve this thing with the help of people smarter than me :)

I typed as Administrator in the Powershell:

PS C:\Windows\System32> icacls .\jscript.dll /setowner "NT Service\TrustedInstaller"

.\jscript.dll: Permission denied.

Successfully processed 0 files; Failed processing 1 files

So the problem persists.

I'm still in the process of finding out what the "Security dialog window" is and how to use it, E.g., this situation.

-Yours Sincerely,

Jussi Lucander

I get some kind of progress by typing this command as Administrator in the C:\Windows\System32 directory:

takeown /f .\jscript.dll /a

Which gives me "SUCCESS..."

Then I actually can see the permissions when I'm trying to give the ownership back to the TrustedInstaller.

In the picture below the permissions of the jscript.dll and untampered jscript9.dll are shown side by side.

"Käyttöoikeus" is finnish and means "Privilege",

"Täydet oikeudet" means "Full Access",

"Lue ja suorita" means "Read and execute"

I'm slowly accepting the prospect that I might very well have to reinstall the Windows 10 :))

Your ownership already TrustedInstaller, so you can't change any permissions.  In order to do that, if you need to, you have to take ownership, back out of the options, then go back in to change the permissions.

Once you have it where you want it, change the ownership back to Trusted installer.  Since I can't read you options (language), you will need to verify if they are correct by comparing them to another file..

Be aware of Inherited permissions, if that is involved.  The fact you show the security shield in the second window  next to the owner is a good sign.

There are probably many online sites that describe how to change permissions on a file..

Hi Saltgrass!

It seems like the ownership would already be TrustedInstaller but it actually isn't.

Here are the current Advanced Security Settings for C:\Windows\System32\jscript.dll where it says

"Unable to display current owner."

After the command:

> takeown /f .\jscript.dll /a

The owner is the Administrator.

Then I try to change the owner to the TrustedInstaller:

After clicking the 'Ok' things look promising:

But after applying the change Windows protection kicks in and says:

"If you just took the ownership of this object you have to close it's properties and open them again before you can examine or change the priviledges."

After clicking 'Ok' everything is back to the square one.

Hi!

Just to be as exhaustive as possible I'll translate the informational text in my previous posting:

"Sinulla ei ole oikeuksia tarkastella tämän objektin suojausominaisuuksia edes järjestelmänvalvojana."

In English it is something like this:

"You  don't have the rights to inspect the protection properties of this object even as the Administrator".

I rest my case. The next thing is to backup everything valuable and try to reinstall the Windows.

Thank You all for the help!