Hi all
A client is running Exchange 2019 on Server 2019 in a Hyper-V VM. Since the 2020-10 Cumulative Update (for Windows Server 2019), all CUs have failed to install via Windows Update. They have another Server 2019 VM which runs Active Directory and File Sharing and does not have this problem.
The latest CU "2021-03 Cumulative Update for Windows Server 2019 (1809) for x64-based Systems (KB5000822)" fails with error 0x800f0985 (some previous months CU have failed with error 0x80246007).
Things I've tried so far:
Download the CUs and install manually - CU installations fail with same error
Run sfc /scannow - no errors found
Reset Windows Update - CU installations fail with same error
Other relevant details:
Versions:
Server 2019 v1809 build 17763.1518
Exchange Version 15.2 (Build 595.3)
WindowsUpdate Log: 77912-ytw-exch-windowsupdate.log
Installed Hotfixes:
PS> (Get-HotFix | Sort-Object -Property InstalledOn)
Source Description HotFixID InstalledBy InstalledOn
------ ----------- -------- ----------- -----------
EXCHANGE Security Update KB4512577 07/09/2019 00:00:00
EXCHANGE Security Update KB4539571 NT AUTHORITY\SYSTEM 30/03/2020 00:00:00
EXCHANGE Update KB4486153 EXCHANGE\Administ... 30/03/2020 00:00:00
EXCHANGE Security Update KB4549947 NT AUTHORITY\SYSTEM 17/04/2020 00:00:00
EXCHANGE Update KB4494174 NT AUTHORITY\SYSTEM 20/05/2020 00:00:00
EXCHANGE Security Update KB4562562 NT AUTHORITY\SYSTEM 15/06/2020 00:00:00
EXCHANGE Security Update KB4558997 NT AUTHORITY\SYSTEM 04/08/2020 00:00:00
EXCHANGE Security Update KB4566424 NT AUTHORITY\SYSTEM 21/08/2020 00:00:00
EXCHANGE Security Update KB4570332 NT AUTHORITY\SYSTEM 11/09/2020 00:00:00
EXCHANGE Security Update KB4577667 NT AUTHORITY\SYSTEM 14/10/2020 00:00:00
EXCHANGE Security Update KB4580325 NT AUTHORITY\SYSTEM 14/10/2020 00:00:00
EXCHANGE Security Update KB4577668 NT AUTHORITY\SYSTEM 14/10/2020 00:00:00
EXCHANGE Security Update KB4587735 NT AUTHORITY\SYSTEM 16/11/2020 00:00:00
EXCHANGE Security Update KB4512937 YTW\Roxxxxx 11/01/2021 00:00:00
EXCHANGE Security Update KB4598480 NT AUTHORITY\SYSTEM 31/01/2021 00:00:00
EXCHANGE Security Update KB4535680 NT AUTHORITY\SYSTEM 31/01/2021 00:00:00
EXCHANGE Security Update KB4601393 NT AUTHORITY\SYSTEM 17/02/2021 00:00:00
EXCHANGE Update KB4577586 NT AUTHORITY\SYSTEM 17/02/2021 00:00:00
EXCHANGE Update KB4601555 NT AUTHORITY\SYSTEM 17/02/2021 00:00:00
EXCHANGE Update KB4589208 NT AUTHORITY\SYSTEM 11/03/2021 00:00:00
EXCHANGE Security Update KB5000859 NT AUTHORITY\SYSTEM 11/03/2021 00:00:00