Hi,
I have a big problem while doing the Windows Update on my Windows 2012 r2 Standard server. While trying to install the Monthly Rollup KB5003671 on the server I get the error 0x80070831. No difference if I use the WSUS, the MS online repository or the MS download catalog as source. I always get the same error.

While investigating the issue and searching a solution I fount this document > Windows Updates Fail Error Code 0x800F0831 Server 2012 R2 . I tried what was described there and ended up with the second error code 0x800705aa.
Now I'm realy lost ...
What I did so far to solve the issue :
1. Clean boot (Result : the error did appear again while install the package KB5003671)
2. sfc /scannow (Result : no problems detected)

3. Dism /Online /Cleanup-Image /RestoreHealth (Result : The operation completed successfully.)
4. SFCFix (Result : SUMMARY: No corruptions were detected.)

5. CBS files copied (CBS.zip)
But in the CBS.log I can find this ....
2021-06-24 10:54:12, Info CBS Store corruption, manifest missing for package: Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14
2021-06-24 10:54:12, Error CBS Failed to resolve package 'Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14' [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Mark store corruption flag because of package: Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to resolve package [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to get next package to re-evaluate [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to process component watch list. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Perf: InstallUninstallChain complete.
2021-06-24 10:54:13, Info CSI 000008f6@2021/6/24:08:54:13.021 CSI Transaction @0xa8e9910f90 destroyed
2021-06-24 10:54:13, Info CBS Exec: Store corruption found during execution, but auto repair is already attempted today, skip it.
2021-06-24 10:54:13, Info CBS Failed to execute execution chain. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:13, Error CBS Failed to process single phase execution. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
Please can someone help me or point me into the right direction to get the Windows Update process running again ? Many thanks.
I have a big problem while doing the Windows Update on my Windows 2012 r2 Standard server. While trying to install the Monthly Rollup KB5003671 on the server I get the error 0x80070831. No difference if I use the WSUS, the MS online repository or the MS download catalog as source. I always get the same error.

While investigating the issue and searching a solution I fount this document > Windows Updates Fail Error Code 0x800F0831 Server 2012 R2 . I tried what was described there and ended up with the second error code 0x800705aa.

Now I'm realy lost ...
What I did so far to solve the issue :
1. Clean boot (Result : the error did appear again while install the package KB5003671)
2. sfc /scannow (Result : no problems detected)

3. Dism /Online /Cleanup-Image /RestoreHealth (Result : The operation completed successfully.)

4. SFCFix (Result : SUMMARY: No corruptions were detected.)

5. CBS files copied (CBS.zip)
But in the CBS.log I can find this ....
2021-06-24 10:54:12, Info CBS Store corruption, manifest missing for package: Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14
2021-06-24 10:54:12, Error CBS Failed to resolve package 'Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14' [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Mark store corruption flag because of package: Package_2607_for_KB4565541~31bf3856ad364e35~amd64~~6.3.1.14. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to resolve package [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to get next package to re-evaluate [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Failed to process component watch list. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:12, Info CBS Perf: InstallUninstallChain complete.
2021-06-24 10:54:13, Info CSI 000008f6@2021/6/24:08:54:13.021 CSI Transaction @0xa8e9910f90 destroyed
2021-06-24 10:54:13, Info CBS Exec: Store corruption found during execution, but auto repair is already attempted today, skip it.
2021-06-24 10:54:13, Info CBS Failed to execute execution chain. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
2021-06-24 10:54:13, Error CBS Failed to process single phase execution. [HRESULT = 0x800f0831 - CBS_E_STORE_CORRUPTION]
Please can someone help me or point me into the right direction to get the Windows Update process running again ? Many thanks.