Forum Discussion
Cumulative update KB5001330 fails to install
Jauhar I was suffer with exact same situation.
It happens if you're using UEFI and your OS disk doesn't have EFI and MSR partition.
You have to recreate both of partition.
before you create it, you have to secure at lease 500MB from OS disk.
Open command>
diskpart
select disk 0(your OS installed disk)
create partition efi size=300
format quick fs=fat32 label="system"
create partition msr size=128
hope it will help
- Hi Johnny
I'm having the same issue and wonder if I need to do the same. In your above command, what're the size 300 & 128 in, KB, MB, GB? Thanks.
Below is the output of my Diskpart info, please tell me if you observe the issue too:
Microsoft Windows [Version 10.0.19042.685]
(c) 2020 Microsoft Corporation. All rights reserved.
C:\WINDOWS\system32>diskpart
Microsoft DiskPart version 10.0.19041.610
Copyright (C) Microsoft Corporation.
On computer: STAR
DISKPART> list disk
Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 931 GB 0 B *
Disk 1 Online 57 GB 0 B
DISKPART> select disk 0
Disk 0 is now the selected disk.
DISKPART> list volume
Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 D DVD-ROM 0 B No Media
Volume 1 C Windows NTFS Partition 909 GB Healthy Boot
Volume 2 SYSTEM FAT32 Partition 260 MB Healthy System
Volume 3 WinRE_DRV NTFS Partition 1000 MB Healthy Hidden
Volume 4 LENOVO_PART NTFS Partition 20 GB Healthy Hidden
Volume 5 E DBAN-1_0_7 FAT32 Removable 57 GB HealthyHi Ken
It's MB. Here is my Disk Status.
DISKPART> select disk 0
Disk 0 is now the selected disk.
DISKPART> list partition
Partition ### Type Size Offset
------------- ---------------- -------- --------
Partition 1 Primary 953 GB 32 KB
Partition 2 System 300 MB 953 GB --> EFI Partition
Partition 3 Reserved 128 MB 953 GB --> MSR Partition
it works your partition style should be GPT.
you can find out your partition style from input 'Get-Disk | ft -auto' in Windows PowerShell.
Johnny_KimYour answer pointed me in the right direction to fix the error by myself.
In my case, the KB5001330 was installing successfully, then the computer restarted, then at 96% the update failed and rolled itself back, and after another restart i went to Windows Update to see the error number 0x800f0922. In my case, the reason for the failure was that my EFI partition was missing some files.
So, TL;DR: I fixed the error by replacing the \EFI\Microsoft\Boot directory on the EFI partition with the contents of C:\Windows\Boot\EFI.
The long story:
DISCLAIMER: this is technical, I do not take any responsibility, etc.
The EFI partition should contains the following directories:
\EFI\Boot
\EFI\Microsoft\Boot
\EFI\Microsoft\Recovery
... and if you dual-boot it may contain other directories, but that's irrelevant.
In my case the problem was, my EFI partition has got corrupted a month ago, and Windows, in its attempt to fix it, has broken it even more, the result being:
- some files and directories in \EFI\Microsoft\Boot went missing,
- in the root directory of the partition, several hundred files with randomly-numbered names have appeared.
This was preventing the KB5001330 update from installing.
So, first I assigned the drive letter to the EFI partition - it is normaly not assigned. I opened the cmd shell in administrator mode and entered "mountvol p: /s" (see here for details). The EFI partition became visible as the P: drive.
Then I removed all the randomly-named files from the root directory of P:\
Then I removed all the contents of the P:\EFI\Microsoft\Boot directory. Some of the files there were protected from deletion (in particular,BCD and BCD.log), so I just left them intact.
Then I copied the contents of the C:\Windows\Boot\EFI directory to P:\EFI\Microsoft\Boot. This way I restored the correct contents of the EFI partition.
Then I rebooted, to verify that the system still runs properly. (By the way, you do not need to unassign that drive letter P: - it disappearsafter reboot.)
Then I went to Windows update and proceeded to install KB5001330 again. This time it went smooth.
Note that the size of my EFI partition is 100MB; the standard size as created when installing Windows 10 from scratch. The size was not an issue in my case - I have 73 MB free on the EFI partition and it was enough to install KB5001330.
To reach my success, I used some information about restoring the EFI partition from this article. In my case it was not necessary to restore the whole partition from scratch, but if my solution does not help some of you, you might want to do the full restoration as described in that article.
kr0tki had most of the answer I needed. In my case, shortly after buying my current laptop about a year ago with Windows 10 Home pre-installed, I played around with dual booting a few different flavors of Linux before finally settling on using vmWare to run Linux Mint as a virtual guest OS. Pop_OS! for some reason left behind a 72MB EFI folder, which left NO free space on my system/EFI partition. I removed the Pop_OS! folder, following most of @kr0tki's instructions, and after that the update finished without any issues. Hope that helps someone else get past this time consuming irritation quickly.
Edit: My error code was 0x800f0922, which I think primarily indicates a problem with the EFI partition not being big enough (or lacking free space) for the update.
- Glad that you managed to resolve the issue.
Just worth pointing out: Apparently 0x800f0922 indicates a general problem with the EFI partition, not limited to lack of space. In my case there was enough free space, but the update failed to install because of missing files in \EFI\Microsoft\Boot.
Hi, Johnny_Kim ,
I tried to use Your way and got the following :
DISKPART> create partition efi size=300
No usable free extent could be found. It may be that there is insufficient
free space to create a partition at the specified size and offset. Specify
different size and offset values or don't specify either to create the
maximum sized partition. It may be that the disk is partitioned using the MBR disk
partitioning format and the disk contains either 4 primary partitions, (no
more partitions may be created), or 3 primary partitions and one extended
partition, (only logical drives may be created).What's wrong ?
Thank You in advance
- What's wrong?
"DISKPART> create partition efi size=300"
There's not one single thing in that message that makes any sense to anyone other than a software coder! It's as if you had to be an electrical engineer to turn on your TV!
That kind of message should have gone out with DOS! "DISKPART" it's low level OS utility and should be used only by person who understand disk partitioning and the OS on administrative level, otherwise it can be harmful. You may accidentally damage your partitions and lose all your data. I suggest stay away.
