Users reported that they encountered the elevated non-admins error while using Windows Update service.
> Update was failing with error: “Windows was unable to complete the > update. The Windows Update service failed the logon. This could be caused by > incorrect file permissions, or because the Windows Update service cannot > access the files needed for this install. (Code 80240020)”
However, the error is a temporary one, which means that you can fix it by following the steps in this article.
- The Windows Update elevatenonadmins error can block you from updating your PC—but that’s not the only problem.
- The Windows update error 80072f78 can occur due to corrupted files, so try to repair them.
- On the other hand, users reported that this BSoD error occurs when they try updating Windows on virtual machines.
- This problem can be solved by uninstalling the chipset drivers, so follow all the steps below.
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Run SFC and DISM scans
- Click on Start
- Type cmd
- Right-click on Command prompt
- Select Run as administrator
- Type the following command and press Enter: DISM /Online /Cleanup-image /Restorehealth
- Wait until the command process is finished.
- Repeat the previous two steps, but this time, enter the following command and press Enter: SFC /scannow
- Wait until the command process is finished.
Run the DISM troubleshooter
- To do that, click the Type here to search button in Cortana’s search box.
- Input dism in the search box.
- Click Command prompt to open the window in the snapshot directly below.
- Then input the dism /online /cleanup-image /restorehealth command, and press the Enter key.
- Thereafter, input the dism /online /cleanup-image /fix-broken-images and dism /online /cleanup-image /restorehealth commands.
- Press the Enter key after inputting each command.
Use the System File Checker
- Press Windows Key + S and type cmd.
- Choose Run as administrator under Command prompt.
- Type the following line and press Enter:sfc /scannow
- Wait for the scan to complete.
Turn off BitLocker
- Press Windows Key + S and enter BitLocker. Select BitLocker Drive Encryption from the menu.
- Go to the Settings tab and locate Require additional authentication. Make sure that Require additional authentication is disabled.
- After doing that, press Apply and restart your computer.
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Turn off Fast Startup
- Press Windows Key + S and enter power options. Select Power & sleep from the menu.
- Now click Additional power settings.
- In the left pane, click on Choose what the power button does. In the right pane, select Change settings that are currently unavailable.
- Now scroll down to Turn Off fast startup (recommended). Select it, click on Save changes, and restart your PC.
Disable Fast Startup in BIOS
- Go to Start > type BIOS > open the first search result
- Go to the Power tab > select “Save Changes and Exit”
- Turn your PC off
- Restart your PC
Change your Windows Update settings
- Press Windows + I to open Settings, and select Update & Security.
- Click the Windows Update option.
- Click the Advanced options button.
- Select the option labeled “Give access to this PC”.
- Now, select Everyone from the “Allow users to select who they want to share with” drop-down menu.
- Restart the PC.
Disable the Windows Update service
- Right-click on the Start menu and select Settings.
- Select the Update & Security option.
- In the right pane, expand the Windows Update section.
- Click on the Advanced options.
- Switch OFF the “Check for updates but let me choose whether to download and install them” option.
