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It seems that this method no longer works on Windows 11:
https://learn.microsoft.com/en-us/windows/win32/api/wuapi/nf-wuapi-iupdate2-copytocache
Interface not registered
Do you have an idea?
Log :
2024/12/12 14:10:41.4300245 5404 6012 DownloadManager Copy update to cache UpdateId = DE002081-6CD0-47C4-839A-47ED9556834C.100 2024/12/12 14:10:41.4300696 5404 6012 DownloadManager Lock the sandbox of update DE002081-6CD0-47C4-839A-47ED9556834C.100 (session data: (null)) 2024/12/12 14:10:41.4333106 5404 6012 DownloadManager Asking handler to generate non-range requests. 2024/12/12 14:10:41.4431829 5404 10392 Test AUTest.cab validation: Test keys are not allowed 2024/12/12 14:10:41.6890306 5404 10392 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\Download\8682a3549ad4300257ca4caa8387360b\DesktopDeployment.cab with dwProvFlags 0x00000080: 2024/12/12 14:10:42.2096923 5404 10392 Misc Microsoft signed: Yes 2024/12/12 14:10:42.4502864 5404 6012 Handler UUP GDR: Event Fired: TimeOut 2024/12/12 14:10:42.9535106 5404 10392 Handler Using the update's service stack dll file 'C:\WINDOWS\SoftwareDistribution\Download\8682a3549ad4300257ca4caa8387360b\Metadata\UpdateAgent.dll' 2024/12/12 14:11:07.4108390 5404 10392 DownloadManager Trigger GDR retry for CopyToCache 2024/12/12 14:11:07.4110312 5404 6012 Handler UUP GDR: Completed 2024/12/12 14:11:07.4110532 5404 6012 Handler MoveDownloadRequest : request has 1 files, is not Language specific 2024/12/12 14:11:07.4110778 5404 6012 DownloadManager CopyPatchFilesToCache: Download request generation succeeded. 2024/12/12 14:11:07.4111305 5404 6012 DownloadManager FAILED [80246FFF] Method failed [CAgentDownloadManager::CopyUpdateToCache:19160] 2024/12/12 14:11:07.4111416 5404 6012 DownloadManager Unlock the sandbox of update DE002081-6CD0-47C4-839A-47ED9556834C.100 (session data: (null)) 2024/12/12 14:11:07.4111699 5404 6012 Agent FAILED [80246FFF] wuauengcore.dll, C:__w\1\s\src\Client\Engine\Agent\updatemanager.cpp @4524 2024/12/12 14:11:07.4111738 5404 6012 Agent FAILED [80246FFF] wuauengcore.dll, C:__w\1\s\src\Client\Engine\Agent\ClientCallRecorder.cpp @3284 2024/12/12 14:11:07.4116054 2320 9388 ComApi FAILED [80246FFF] ISusInternal:: CopyUpdateToCache2 2024/12/12 14:11:07.4116564 2320 9388 ComApi FAILED [80246FFF] wuapicore.dll, C:__w\1\s\src\Client\comapi\Update.cpp @1315 2024/12/12 14:12:03.3977135 5404 2088 DownloadManager Copy update to cache UpdateId = DE002081-6CD0-47C4-839A-47ED9556834C.100 2024/12/12 14:12:03.3977445 5404 2088 DownloadManager Lock the sandbox of update DE002081-6CD0-47C4-839A-47ED9556834C.100 (session data: (null)) 2024/12/12 14:12:03.4004324 5404 2088 DownloadManager Asking handler to generate non-range requests. 2024/12/12 14:12:03.4466925 5404 3844 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\Download\8682a3549ad4300257ca4caa8387360b\DesktopDeployment.cab with dwProvFlags 0x00000080: 2024/12/12 14:12:03.4784652 5404 3844 Misc Microsoft signed: Yes 2024/12/12 14:12:03.6803350 5404 3844 Handler Using the update's service stack dll file 'C:\WINDOWS\SoftwareDistribution\Download\8682a3549ad4300257ca4caa8387360b\Metadata\UpdateAgent.dll' 2024/12/12 14:12:04.4087957 5404 2088 Handler UUP GDR: Event Fired: TimeOut 2024/12/12 14:12:20.9437501 5404 3844 DownloadManager Trigger GDR retry for CopyToCache 2024/12/12 14:12:20.9439297 5404 2088 Handler UUP GDR: Completed 2024/12/12 14:12:20.9439521 5404 2088 Handler MoveDownloadRequest : request has 1 files, is not Language specific 2024/12/12 14:12:20.9439720 5404 2088 DownloadManager CopyPatchFilesToCache: Download request generation succeeded. 2024/12/12 14:12:20.9440160 5404 2088 DownloadManager FAILED [80246FFF] Method failed [CAgentDownloadManager::CopyUpdateToCache:19160] 2024/12/12 14:12:20.9440242 5404 2088 DownloadManager Unlock the sandbox of update DE002081-6CD0-47C4-839A-47ED9556834C.100 (session data: (null)) 2024/12/12 14:12:20.9440477 5404 2088 Agent FAILED [80246FFF] wuauengcore.dll, C:__w\1\s\src\Client\Engine\Agent\updatemanager.cpp @4524 2024/12/12 14:12:20.9440502 5404 2088 Agent FAILED [80246FFF] wuauengcore.dll, C:__w\1\s\src\Client\Engine\Agent\ClientCallRecorder.cpp @3284 2024/12/12 14:12:20.9444183 2320 9388 ComApi FAILED [80246FFF] ISusInternal:: CopyUpdateToCache2 2024/12/12 14:12:20.9444275 2320 9388 ComApi FAILED [80246FFF] wuapicore.dll, C:__w\1\s\src\Client\comapi\Update.cpp @1315 2024/12/12 14:12:20.9707580 2320 9388 ComApi * START * Federated Install ClientId = (null) (cV: RpHa1YqonEyrNpwc.2.0) 2024/12/12 14:12:20.9718816 2320 6544 ComApi * START * Install ClientId = (null), Flags: 0X60 (cV: RpHa1YqonEyrNpwc.2.0.0) 2024/12/12 14:12:20.9718849 2320 6544 ComApi Allow source prompts: No; Forced: No; Force quiet: No; Attempt close apps if necessary: No 2024/12/12 14:12:20.9719153 2320 6544 ComApi Updates in request: 1 2024/12/12 14:12:20.9719244 2320 6544 ComApi ServiceID = {EA17AEA5-0549-4D10-9D36-CA8A76C5BEFF} Third party service
I would like to point out that the data files are exactly those indicated in downloadurls :
The method works very well under Windows 10 but not under Windows 11
According to the Doc:IUpdate2::CopyToCache
IUpdate2::CopyToCache only works if the provided files are an exact match for the files that Windows Update would have normally downloaded on that computer.
Could you please tell us what do you mean "this method no longer works"? What is the error code returned by the function?
Could you please provide a minimum sample to help us reproduce the issue?
The operation is as follows:
I retrieve all the necessary binaries thanks to:
https://learn.microsoft.com/en-us/windows/win32/api/wuapi/nf-wuapi-iupdatedownloadcontent-get_downloadurl
Then I create a collection with the downloaded files: https://learn.microsoft.com/en-us/windows/win32/api/wuapi/nn-wuapi-istringcollection
Finally I use CopyToCache to send the collection to the waptwua engine:
https://learn.microsoft.com/en-us/answers/questions/2129669/iupdate2-copytocache-method-windows-11?source=docs
The error returned: interface not registered
it works very well with windows 10
under Windows 11, it started to stop working since September
If the COM standard marshaler can’t find a proxy/stub factory for an interface, it returns the error REGDB_E_IIDNOTREG (Interface not registered).
I suggest you could try to reset Windows Update components. Refer to the thread: https://answers.microsoft.com/en-us/windows/forum/all/windows-10-windows-update-failure-error-code/301e6d8b-719b-4239-812b-3e6592a978a5
Could you please provide a minimum sample to help us reproduce the issue?
I will prepare a powershell script to reproduce the problem
I will prepare a powershell script to reproduce the problem
Here is winapi forum. Designed to deal with the issues related to win32 application development.
Could you please reproduce the issue in a win32 project?
Hi
You will find a script here:
This script works very well under Windows 10, no longer works under Windows 11.
Copytcache is the cause of the problem.
to launch it:
cscript.exe C:\LegacyScripts\InstallUpdates.vbs /CAB:c:\wsusscn2.cab /REPOSITORY:"C:\cache"
:"C:\cache" folder contains the files mentioned in "downloadurl"
I specify that to do a correct test the PC must have an update pending.
According to your description, the issue is that the Copytcache does not work on win11. I suggest you could post the issue to the Feedback hub for better help. That's the best place to report on this kind of API not working due to the windows version.
And here is winapi forum. Designed to deal with the issues related to win32 application development. You are using the script, it is out of our support scope.
I was wrong, the problem only concerns Windows 11 24h2
It could be related to this problem.:
It doesn't mention copytocache but I hope that's where the problem comes from.
I confirm that once kb5048667 is installed manually with the msu, copytocache seems to work correctly again.
On the other hand, Microsoft continues to currently provide an ISO online that contains the bug, which is a shame...
Ultimately the problem was still there...
The problem appears with cumulative.
We ended up realizing that the difference with the old version of Windows is that we now have a .msu which appears in the download urls of the cab.
We therefore completely change our behavior for this specific case...
We no longer use copytocache when a .msu file appears in the download urls, we forget all the download urls... and we download only the .msu file then we launch the installation of it with wusa.exe "{ }" /quiet /norestart.
The behavior therefore completely changes compared to the method we used before. And no communication from Microsoft explains it....
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We already had the problem with cumulative patch KB5048667 from January: CopyToCache returns “COM-Error: 0x80246fff” - according to the documentation:
WU_E_DM_UNEXPECTED There was a download manager error that is not covered by another WU_E_DM_* error code.
It is the case that each individual download file belonging to the patch causes this error, so that it cannot be linked to a single file.
Seen on a Windows 11 24H2 client, also occurs directly during the first update check, so that no update cache etc. can be the source of the error.
Unfortunately, the same problem exists in February with the cumulative patch KB5051987 - which replaces the above-mentioned patch. So the problem is still not solved.
Data from the Windows 11 client on which the error is reproducible:
Windows 11 24H2 - Build 26100.2605
Installed hotfixes (get-hotfix):
KB5042098, KB5048779, KB5050575, KB5049685
KB5048667 is also installed, we have done this manually via the separately downloaded msu file - but this is not a permanent solution for us for all upcoming patches.
Attached is an example in C++ with which this can be reproduced. It is a simple example, the patchscan.cab file is expected under c:\temp and the downloads are stored under c:\temp\WSUS - adjust the directory if necessary.
Can we hope that the problem has now been solved in February and that CopyToCache will work again with the next update in March at the latest?
We would be pleased to receive feedback on how to solve the problem.