The short version
- 01Confirm that the code appears in Windows Update and record the failed KB and time.
- 02Run the Windows 11 Get Help Windows Update troubleshooter.
- 03Ask the administrator to review restrictions on a managed computer.
- 04Collect the matching CBS.log or WindowsUpdate.log error and the denied object.
- 05Back up the OS disk before administrator-led permissions repairs.
- 06Use Microsoft's dedicated procedure for the identified failure and retry the same update.
Raw message
Windows Update: 0x80070005 — access denied
Likely causes
- The servicing identity lacks access to a required file, folder or registry key.
- Security software may lock a required file.
- Management policies or restrictions may prevent the update operation.
Confirm that access was denied during Windows Update
Microsoft's dedicated Update article explains that the update process cannot access a required file, folder or registry key. It names permissions, locked files and management restrictions among the causes. This reference covers the Update context; the same code shown by a different app requires that app's investigation.
Find the denied object and match the failure time
Microsoft uses CBS.log or WindowsUpdate.log to locate 0x80070005. Its common-error reference looks in %Windir%\logs\CBS and checks nearby log entries for the object the servicing process could not access. Our recommendation is to give the matching error, KB and time to the administrator rather than publish complete logs containing device details.
Back up before changing servicing permissions
The dedicated article requires an OS-disk backup before troubleshooting. Its deeper repair steps change system permissions and servicing state. Follow that procedure with an administrator who can identify the failed object; an elevated user account alone does not establish that Windows' servicing identity has the correct access.
Sources and review notes
Checked on . Based on Microsoft's dedicated 0x80070005 Update article and CBS-log guidance. Matching failure times, keeping logs private and escalating managed-device repairs are editorial guidance. The shared Update page supplies the Windows 11 Get Help route. Glitchary is independent of Microsoft.