Issue: Software Update synchronization failed with the following exceptions in wsyncmgr.log.
SMS_WSUS_SYNC_MANAGER 8032 (0x1f60) Failed to download file- "http://officecdn.microsoft.com/pr/wsus/ofl.cab" from internet. Using proxyserver - 0. Error = 12029 SMS_WSUS_SYNC_MANAGER 8032 (0x1f60) Failed to download or process the O365 file manifest. Caught exception: System.IO.FileNotFoundException: Failed to download file manifest for O365 from http://officecdn.microsoft.com/pr/wsus/ofl.cab, with error 12029at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadAndExtractCabFile(String cabFileUrl, String fileNameInCab)SMS_WSUS_SYNC_MANAGER 8032 (0x1f60)Failed to download or process the O365 file manifest. Caught exception: System.IO.FileNotFoundException: Failed to download file manifest for O365 from http://officecdn.microsoft.com/pr/wsus/ofl.cab, with error 12029at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadAndExtractCabFile(String cabFileUrl, String fileNameInCab)~~ at Microsoft.SystemsManagementServer.SoftwareUpdatesManagement.WsusSyncAction.WSyncAction.DownloadO365FileManifest(String fileManifestCabURL, String o365FileManifestXml) SMS_WSUS_SYNC_MANAGER 8032 (0x1f60) Failed to synchronize O365 update bcaa6153-dd4b-4f69-bc39-e546554312c7 - Office 365 Client Update - Deferred Channel (1602-17) 64-bit Edition
Solution:
The hierarchy’s top level WSUS server and the top level Configuration Manager site server must have access to the following URLs:
*.microsoft.com,
*.msocdn.com,
*.office.com,
*.office.net,
*.onmicrosoft.com,
officecdn.microsoft.com,
officecdn.microsoft.com.edgesuite.net.
For details, refer to – Manage updates to Microsoft 365 Apps with Microsoft Endpoint Configuration Manager – Deploy Office | Microsoft Docs