How to Get Permission From Trustedinstaller to Make Changes to Files

In Windows OS, whenever you try to delete any file or folder, you may experience this error message that says, “You require permission from TrustedInstaller”. Even if you are using your computer as an administrator, this folder Access Denied message will pop up.

In order to protect core Windows system files, Microsoft has designed NT SERVICE\TrustedInstaller in Windows to own these important files. So even if you are admin, you cannot modify or delete those core system files. You have to change permission from use to NT SERVICE\TrustedInstaller.

When you try to delete files and an error message pops up – “You require permission from TrustedInstaller“. Such error can be rectified by following some approaches that can save a fortune for you. In this article today, we will explain how to troubleshoot this error. So without any further delay, let’s get started.

When does this Trustedinstaller error occur?

This error usually occurs when you try to delete a file or folder having different administrator authorization. So if you want to rectify it, you are required to change the permission or get it eventually. When you change the ownership of the file/folder, your problem gets solved automatically.

What’s TrustedInstaller?

The main question that arises here is that what exactly is TrustedInstaller? It is a technology that helps maintain the security of core files. TrustedInstaller is a part of the Windows Resource Protection (WRP) implemented by Microsoft. Some of the files that gets protection includes .dll, .exe, .ocx, .sys files, etc.

Nobody can modify, or delete it, not even the administrator. Only the Windows Module Installer Service has the authority for the same. Some people consider it as malware. All those speculations will be cleared in the frequently asked questions later in this article.

How to Get Permission From Trustedinstaller

If you are wondering how to troubleshoot this error, we have a feasible solution for you. So just simply follow the stepwise guidelines as given below so that you can get the authorization for deleting the file/folder. Let’s get started.

How to Get Permission From Trustedinstaller

  • First of all, right-click on the file you had a problem deleting with.
  • Select Properties.

  • On Properties window, go to Security.

  • Now click on the Advanced tab to bring up the advanced permission window.
  • Nearby the ownership information, you are required to hit the change button.

  • As soon as a new window pops up, type users in the field – Enter the object name to select.
  • Or you can enter “NT Service\TrustedInstaller” as the new owner’s name and save it. It’s done.

  • Select Apply and then OK.
  • Click OK again.
  • Finally, you can test that now you are able to delete the file/folder without any error.


Q1) Is it possible to disable or remove the TrustedInstaller?

Ans) Although it is possible we highly recommend not to. The reason is that it is a security feature of your system and its removal may lead to an unhealthy system for sure.

Q2) Is it malware?

Ans) Well the possibility is quite minimal. But if you don’t have any antivirus on your system then few unwanted elements might play with it. If you are facing problems with the deletion of your personal files then it could be a sign of threat.

Q3) Why does it consume high resources of the system?

Ans) It is a normal scenario of the TrustedInstaller consuming a high amount of your system resources. But if there is continuous consumption then it might be some malware attack. It is recommended from our end to have a good antivirus on your system and scan the system every now and then.

Final Words

Hope you find this article useful. If you are still unable to delete a particular file or folder then comment below. We will help you.

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