Offline Configuration Manager Failure to Synchronize Office 2024 LTSC Updates

We have Configuration Manager 2409 on an offline network. Synchronizing and deploying software updates was not been a problem until we tried to add Office LTSC updates, but we are now unable to successfully synchronize these new updates. Followed the directions at Microsoft's "Synchronize Microsoft 365 Apps updates from a disconnected software update point" page to download the update we wanted with OfflineUpdateExporter.exe and then copy it via USB to J:\WSUS\WsusContent\Office LTSC.

When synchronizing CM, PatchDownloader.log reports:

Download J:\WSUS\WsusContent\Office LTSC\727f7ed5-bf79-438c-b929-173f27718977\office\data\16.0.17932.20428\s640.cab to C:\WINDOWS\TEMP\CAB292.tmp.cab returns 0   Software Updates Patch Downloader    7/30/2025 1:00:19 PM            4796 (0x12BC)

…

Successfully moved C:\WINDOWS\TEMP\CAB292.tmp.cab to C:\WINDOWS\SystemTemp\e00e808c-e529-4b2f-bfe2-58eecae38b76.cab               Software Updates Patch Downloader           7/30/2025 1:00:19 PM               4796 (0x12BC)

I interpret that output as everything related to OfflineUpdateExporter.exe worked as expected. I see the cab and e00e808c-e529-4b2f-bfe2-58eecae38b76.hash in C:\WINDOWS\SystemTemp.

Wsyncmgr.log reports:

Synchronizing update 727f7ed5-bf79-438c-b929-173f27718977 - Office LTSC 2024 Client Update Version Perpetual for x64 based Edition (Build 17932.20428)               SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:19 PM            11988 (0x2ED4)

…

GetOfficeFileHash_O365Service() failed to get file hash for O365 file. Caught exception: System.UnauthorizedAccessException: Access to the path 'C:\WINDOWS\SystemTemp\e00e808c-e529-4b2f-bfe2-58eecae38b76.cab' is denied.~~   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)~~   at System.IO.File.InternalDelete(String path, Boolean checkHost)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadAndExtractCabFile(String cabFileUrl, String fileNameInCab)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.GetOfficeFileHash_O365Service(O365FileList o365FileList, String fileContainingHash, String updateId)               SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:19 PM            11988 (0x2ED4)

ProcessOfficeFile() failed to get file properties from file manifest. Caught exception: System.UnauthorizedAccessException: Access to the path 'C:\WINDOWS\SystemTemp\e00e808c-e529-4b2f-bfe2-58eecae38b76.cab' is denied.~~   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)~~   at System.IO.File.InternalDelete(String path, Boolean checkHost)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadAndExtractCabFile(String cabFileUrl, String fileNameInCab)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.GetOfficeFileHash_O365Service(O365FileList o365FileList, String fileContainingHash, String updateId)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.ProcessOfficeFile_O365Service(O365FileList o365FileList, Int32 iFile, XmlWriter xml, String updateId)               SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:19 PM            11988 (0x2ED4)

ProcessFileManifest() failed to process O365 file manifest. Caught exception: System.UnauthorizedAccessException: Access to the path 'C:\WINDOWS\SystemTemp\e00e808c-e529-4b2f-bfe2-58eecae38b76.cab' is denied.~~   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)~~   at System.IO.File.InternalDelete(String path, Boolean checkHost)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadAndExtractCabFile(String cabFileUrl, String fileNameInCab)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.GetOfficeFileHash_O365Service(O365FileList o365FileList, String fileContainingHash, String updateId)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.ProcessOfficeFile_O365Service(O365FileList o365FileList, Int32 iFile, XmlWriter xml, String updateId)~~   at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.ProcessFileManifest_O365Service(String sO365ServiceUrl, XmlWriter xml, String updateId)               SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:19 PM            11988 (0x2ED4)

Failed to synchronize O365 update 727f7ed5-bf79-438c-b929-173f27718977 - Office LTSC 2024 Client Update Version Perpetual for x64 based Edition (Build 17932.20428) SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:19 PM               11988 (0x2ED4)

…

Sync failed because top site Office content processing failure. Sync will not retry further.   SMS_WSUS_SYNC_MANAGER          7/30/2025 1:00:20 PM               9256 (0x2428)

I gave the Everyone group Modify NTFS permissions to that folder, but that does not resolve the "GetOfficeFileHash_O365Service() failed to get file hash for O365 file…Access to the path 'C:\WINDOWS\SystemTemp\e00e808c-e529-4b2f-bfe2-58eecae38b76.cab' is denied" error. What can we do to resolve this problem?