I am just wondering if anyone else has experienced this issue? I installed Windows 10 Pro x64 (Build 1607) March 2017 updates this morning. All appeared to go well until the computer tried to reboot. It couldn't successfully boot. It would go into Automatic Repair mode, diagnosing, attempting to fix, which failed repeatedly, even when booted from a Windows Start-up Repair CD. Restore Points could not be successfully restored, something about "AppxStaging" and an error code 0x80070091, which is a strange one because it normally occurs when you try to delete files or folders. I did check, using the Startup CD and command prompt option, the C:\Windows\System32 folder and at the end of it was about ten files with strange characters, all about 380 bytes. SFC would not run successfully.
I ended up resorting to my latest Easeus Todo Backup system image of Drive 0 from last Friday, booting from the Easeus Todo Backup Win-PE disk, and restoring all of the partitions on my C: drive. Then I manually put back the data files changed since my last backup 5 days ago. I was back in business, with the exception of some minor configuration issues, like my Chrome extensions disappearing and Roboform deciding it was no longer registered.
Even if you were not affected by the updates as I was, this is a perfect example of why taking the time to create regular system backups is SO IMPORTANT. The only other option left to me would have been a System Reset, if my the restore of one of my Drive 0 system image backups had failed (I keep the most recent four on hand). My routine is to image Drive 0 every Friday on both of my computers, plus use SyncToy to keep my Drive C: data folders synced to an internal backup drive.
I won't be attempting another Windows Update until immediately after I have created a full system image of Drive 0. I have looked around to see if anyone else is reporting an issue with the March 2017 Windows Updates, but I have not found anything ... yet. Perhaps folks are all busy trying to get their computers to boot. I hope not.
Submitted for your information. Have a great day.
Edited by garioch7, 15 March 2017 - 07:14 AM.