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Cannot remove system folders on Windows 10

Recently upgraded my home desktop computer with a bigger SSD. The software managed to mirror all files from the older/smaller SSD.

But now, Windows does not let me delete the older system folders.

I have these kind error messages:

  • Folder Access Denied
  • You require permissions from TrustedInstaller …

Folder access denied for TrustedInstaller

The message “… TrustedInstaller” is the clue. The folder is owned by that “user/application”. I need to change back to my user (“Eduardo”), and give it “Full Permissions”.

The following lines are the steps I took to solve this problem. Hope it helps you also.

Folder access denied for TrustedInstaller

  • Right click on the folder.
  • Select Properties
  • (1) Select “Security” tab, followed by “Advanced” button.
  • (2) Verify owner is not your username. Select Change.
  • (3) Write your username on text box, and select “Check names” button, to very it exists.
  • Select “OK”, to close dialog and back to “Advanced Security Settings for …”

Folder access denied for TrustedInstaller

  • Now, set checkbox “Replace owner on subcontainers and objects” (1).
  • Select “Add” button (2).
  • Click on “Select a principal” (3)
  • Write again the name of current user (4) followed by “Check Names” button (5).
  • Select “OK”, to close dialog and back to windows “Permission Entry for …”
  • Finally select “Full control” (6).
  • Keep selecting “Ok” button, until all windows are closed.

You must now be able to remove that folder.

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