Error code 0x80070091, Error 0x80070091, Fix Windows error 0x80070091, Windows error 0x80070091

0x80070091 Error Occurrence Causes

You may not have security permissions to delete a particular folder. Junk files present in the temporary locations can cause 0x80070091 error.

Common Fallouts

You won't able to delete a particular file or folder. Delete procedure fails with an error message. Performing various computing tasks becomes a hassle.

Detailed Instructions for Windows 8/ 7/ Vista/ XP

  • Make sure you're logged-in from administrator account
  • Remove Disk Junk
  • Take Ownership of the File/ Folder
  • Use Microsoft Safety Scanner

Make sure you're logged-in from administrator account

Make sure that you're logged-in from the administrator user account and you have necessary administrative privileges.

Windows 8:

  • Swipe from right and tap Settings.
  • Click Change PC Settings | Users.
  • Your account type will appear, for example, administrator or standard user. If the account type is standard, you'll have to continue following steps given below.
  • Swipe from right and click Settings | Power | Restart.
  • When the user log-in screen appears, select the Administrator account and log-in with a valid password.

For Windows 7:

  • Click Start | Control Panel.
  • Click User Accounts | Manage User Accounts.
  • Check the account type (administrator/ standard user). If the account type is standard, you'll have to continue following below steps.
  • Click Start | Switch Account.
  • Log-in to your Administrator account with valid password.

Remove Disk Junk

Presence of junk in your system can cause error 0x80070091. Remove the junk through steps given below.

Windows 8

  • Open Charms bar and click on Search.
  • In search type Disk Cleanup.
  • Now click on Settings.
  • Click on Free up disk space by deleting unnecessary files.

In Windows 8 you can use Run dialogue as well

  • Click on Start and then right-click on All Apps.
  • Scroll to bottom and click on Run.
  • In Run type "cleanmgr.exe" without quotes. Click OK.

For Windows 7:

  • Click on Start button and in Search box type "Disk Cleanup".
  • Right-click on Disk Cleanup and select "Run as administrator" option.
  • Select the disk volume and click on OK

Take Ownership of the File/ Folder

Taking file/ folder ownership means nothing but to specify read/ write/access permissions in the file/ folder properties dialog. There is a good possibility that the file/ folder properties lack enough ownership permissions.

  • Open Windows Explorer. Open the parent directory where the actual file is stored.
  • Now right-click on File or Folder and select Properties.
  • Click on Security Tab | Advanced and then Owner.
  • Change Owner to | Click on New Owner
  • To take ownership of all objects and sub-containers select Replace Owner on Sub-Container and Objects

Use Microsoft Safety Scanner

Microsoft Safety Scanner is a free downloadable tool to remove viruses, malwares and other malicious content. Download it from and perform customized scan.

  • Open Microsoft Safety Scanner.
  • Click Scan Type | Customized Scan.
  • Select the parent folder containing your file/ sub folder.
  • Click Next.

Scan again

  • Open Microsoft Safety Scanner and click on Next
  • Select type of scan from Scan Type
  • Click Next

Restart your system, start scan again

  • Open Start
  • Click on Arrow in left right corner | Restart
  • Open Microsoft Safety Scanner | Click on Next
  • Select the scan type