What Is TrustedInstaller? Why Does It Preserve Me From Renaming Information?

TrustedInstaller is an integrated user account in Windows 8, Windows 7, Windows Vista and Windows 10.

This user account "owns" a variety of system files, including files in your program files, your Windows folder, and even the Windows.old folder that was created after you upgraded from one version of Windows to another.

To rename or delete these files, you have to withdraw them from the TrustedInstaller user account. Here's how to change file ownership from the TrustedInstaller to your regular administrator account and why you'd want to.

What is TrustedInstaller?

The TrustedInstaller user account is used by the Windows Modules Installer service, which is included with Windows. This service is responsible for installing, changing and removing Windows updates and other optional Windows components so that it can change them exclusively.

How do I delete the Windows.old folder?

If you try to delete that C: Windows.old After upgrading to a new version of Windows and telling you that you need TrustedInstaller authority, you do not need to take ownership of the files at all. All you need to do is use the Disk Cleanup Wizard.

Enter to open the Disk Cleanup wizard Fat plate cleaning Select the best match in the Start menu's search bar.

Click on that Clean up system files Button in the Disk Cleanup window.

If you have a Windows.old folder on your hard drive, it will say a Previous Windows installations Check box in the list of system files that you can delete. Enable the option and click OK. Windows will delete the Windows.old folder for you. Make sure you have copied all important files from it before running Disk Cleanup.

Take ownership of files

The TrustedInstaller user account owns your system files. If TrustedInstaller prevents you from renaming or deleting a folder, it is often for good reason. For example if you rename that C: Windows System32 Folder, your operating system has stopped working and needs to be repaired or reinstalled.

You should only take possession of, rename, delete, or move system files if you know what you are doing. Once you know what you are doing, follow the instructions below to take ownership of the files.

Find the folder or file that you want to own. Right click on it and choose properties.

Press the security In the Properties window, click the tab and click Advanced Button down.

Press the change Link next to TrustedInstaller to change owner.

Art Administrators in the box and click Check the names Button. Windows will automatically complete the rest of the name. This gives ownership to all administrators in the system. Press the OK Button to save this change.

Activate the Replace the owner on subcontainers and objects Setting to apply these changes to all subfolders and files in them. Press the OK Button at the bottom of the Advanced security settings Window. Next, press the To edit Properties window button.

Choose Administrators User and enable the Full control Check box to give administrator accounts full permissions on the files. Press the OK Press twice to save your changes. You now have the option of renaming, deleting or moving the files as you wish.

If you become a regular owner of files, you may want to download a .reg file that is a Take possession Option to your right click menu. You can then take ownership of files and folders with just a few clicks.

Check for corruption issues with TrustedInstaller

If you still haven't been able to rename your files, the Windows TrustedInstaller may be damaged. System files are prone to corruption issues in Windows for a number of reasons. The most important ones are a recent Windows update, sudden shutdown or malware.

There are a few manual ways that you can try to resolve the issue. You can also use automated solutions. For the best suggestions, check out our list of free Windows automated repair tools.

1. Run the System File Check (SFC).

SFC is a built-in Windows utility. It works by scanning your PC for errors and then trying to fix them. It's a handy Windows repair tool that you can use to fix other problems as well.

However, you need to use Command Prompt.

This is how it works:

  1. Art cmd in the search bar of the start menu Right click on the best match and choose Execute as administrator.

  2. Art sfc / scannow and hit Enter.

Your scan will be completed in a few minutes. SFC takes care of any problems it finds automatically.

2. Run Windows System Restore

Like SFC, System Restore is an integrated system tool. It will restore your computer to an earlier state if it was working fine. Keep in mind that to implement a system restore, you must first set up a restore point before things go south with your PC.

Here's how you can check if you have a previous restore point:

  1. Art system recovery Select the best match in the Start menu's search bar.

  2. Select in the wizard Choose a different restore pointand click on Next.

If you can see a restore point here, please. This means that at some point in the past you have created a restore point for your Windows (which we highly recommend), or if you haven't, your system did it for you.

Now choose Finished to start system restore. Your PC will soon be restored to good working order.

Should you disable TrustedInstaller?

No, you shouldn't.

That’s a bad idea. This comes from someone who learned this the hard way. TrustedInstaller does indeed use CPU resources, and while this is a good reason for you to disable it, it doesn't.

TrustedInstaller handles numerous other complex Windows system processes. If anything goes south in your system files while you are tinkering, your entire system could be damaged.

Hopefully, before you started this article, you knew more about TrustedInstaller by now. In summary, it is a critical process that takes care of apps, installing and managing updates in your Windows system. Although it sometimes prevents you from accessing certain files or makes you feel like you are using system resources, it is an important system process.

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About the author

Shaant Minhas
(22 articles published)

Shaant is a staff writer at MUO. A graduate in computer applications, his passion for writing explains complex things in plain English. When he's not researching or writing, he's enjoying a good book, running, or hanging out with friends.

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