Windows update KB2919355 fails to install - Error code 800F0922

You do have a system reserved partition: you just can't see it on the Disk Manager GUI tool. To see it, start 'cmd' in Admin mode & run Diskpart. See my earlier post on page 6 for details. That said, you cannot make any changes to it since it is not associated with a 'volume'. I tried using diskpart, minitool, EaseUS - to no avail.

What solved my problem was running the 'Windows Store Troubleshooter'. It showed a driver issue on my USB-IF xHCI USB Host Controller. Windows could not load this driver (yes, it was the latest version) on my laptop (HP dv6t), due to a conflict. HP had posted the resolution to this on their support site. Once I had resolved this issue, the update went through without any issues.

You can see if you have any driver related issues by running the Device Manager & by scanning for hardware changes.

Hope you find this useful.

Contact a Micosoft Moderator on the MS Community site. There is a participant link on the site that identifies the moderators.   You might try Susan Bradley.  She was very helpful to me.

Please... I would be very appreciative.  How do I get a case number? 

We happen to have two identical computers, still within warranty period, that are set up identically.  Both have the same partition amounts and both came laded with 8.0 (I upgraded to 8.1 on both of them at the same time).  One has the kb2919355 installed with no issues, the other fails to install.

Suggest you get a Micosoft Moderator from Micosoft Community to obtain a case number from Micosoft.  Have MS support help to solve the problem.  If they are unable to help then do an in place installation of Windows 8.1.  This worked for me several months ago and am still run 81 with the update.

I have tried all of the fixes presented and I get encouraged that I finally found the fix, but my machine still fails to install KB2919355 every single night.  I have always had 'Automatic Update' clicked on, and when I check to see the reason for failure, it gives code 800F0922. 

I don't see that there are any partition problems, but then I don't see that I have a "system reserved partition".  All partitions indicate 'Healthy'.  Running Windows 8.1 on a rather new computer that came loaded with 8.0.  As near as I can tell, I don't have Cisco VPN client, at least I can't find it if I do, checked registry and don't see it there.

I ran the DISM cleanup and restore health and was encouraged that some 'corrupt' files were 'fixed'.  Restarted and proceeded to download the Windows updates and after about 30 or 40 minutes and 100% completed, it concludes again that ....we can't complete the install and we're rolling back, which of course takes another 30 minutes. 

This is taking entirely too much time, energy, and effort!  Any new help???