Today I wanted to install new updates on existing images on SCCM. Software Library> Operating Systems>Operating System Images> Right click on the image>Schedule Updates. Sometime later, Schedule Updates Status failed with the message:
Failed to apply one or more updates
I checked the OfflineServicingMgr.log and see the error:
Failed to remove previously existing staging folder C:\ConfigMgr_OfflineImageServicing
So, It can not clean the previously mounted folder and I need to manually clean and unmount this folder to resolve the issue.
Open Command Prompt with the admin privileges,
Run these commands on the server
Reboot the server. Make sure you reboot the server. If you don't, you will have same problem again.
And finally OfflineServicingMgr.log looks fine.