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Question
Wednesday, November 21, 2018 1:26 AM
I have a small domain with multiple Win10 Enterprise machines and one Win10 Pro machine. WSUS is running on the single domain controller and distributes most updates, but I've set group policy to tell the clients to get Windows Defender updates first from Microsoft, then from WSUS.
All Win10 machines get into a state where they stop downloading updates. Sometimes the UI shows one or more updates "Pending download"; other times it shows failure. This becomes evident first when Windows Defender gets out of date.
If I restart the Win10 machine, updates complete immediately, but they soon get stuck again.
I've run the Windows Update Troubleshooter as well as manually resetting the Windows Update store. It doesn't solve it.
Win7 machines on the network have no update issues.
The common I'll post some sections from the extracted Windows Update log. The common issue, whether pulling from Microsoft or WSUS, seems to be the "transient errors" when downloading.
Thanks for any suggestions
Mark Berry
MCB Systems
All replies (12)
Thursday, December 6, 2018 5:40 PM âś…Answered | 2 votes
Thanks for you reply !
I managed to get it work by setting Administrative Templates (Computers) > Windows Components > Delivery Optimization > Delivery Optimization > Download Mode to Bypass(100) but i'm loosing Optimisation Delivery on my 1809 clients.
Wednesday, November 21, 2018 1:37 AM
Here are the Windows Update log excerpts. After determining which updates are available, it first tries to download from a Microsoft server. Note that I can manually download the update from the specified URL using Internet Explorer.
2018/11/20 16:12:37.9477434 3196 116 DownloadManager * START * Begin Downloading Updates [CallerId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)] [Call ID = A2E46DDC-A0AA-4209-A4CF-9F8F95E8C76A]
2018/11/20 16:12:37.9477479 3196 116 DownloadManager Priority = 2, NetworkCostPolicy = 4, Interactive = 1, Download on Battery = 0, Bypass Regulation = 1, Owner is system = 1, Proxy session id = -1, ServiceId = 7971F918-A847-4430-9279-4A52D1EFE18D.
2018/11/20 16:12:37.9477485 3196 116 DownloadManager Updates to download = 1
2018/11/20 16:12:37.9477504 3196 116 Agent Title = Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.281.501.0)
2018/11/20 16:12:37.9477530 3196 116 Agent UpdateId = 1F07A261-C004-4FF3-B614-8D34FCD777D9.200
2018/11/20 16:12:37.9477536 3196 116 Agent Bundles 1 updates:
2018/11/20 16:12:37.9477559 3196 116 Agent 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:37.9477742 3196 116 DataStore Failed to find update with global id of 1F07A261-C004-4FF3-B614-8D34FCD777D9.200 (sessiondata = (null))
2018/11/20 16:12:37.9477819 3196 116 DownloadManager No locked revisions found for update 1F07A261-C004-4FF3-B614-8D34FCD777D9.200 (SessionData = (null)); locking the user-specified revision.
2018/11/20 16:12:37.9477992 3196 116 DataStore Failed to find update with global id of 1F07A261-C004-4FF3-B614-8D34FCD777D9.200 (sessiondata = (null))
2018/11/20 16:12:37.9484047 3196 116 DataStore Failed to find update with global id of 275507FF-DA9B-495F-A73B-68007AB524B1.200 (sessiondata = (null))
2018/11/20 16:12:37.9484108 3196 116 DownloadManager No locked revisions found for update 275507FF-DA9B-495F-A73B-68007AB524B1.200 (SessionData = (null)); locking the user-specified revision.
2018/11/20 16:12:37.9484176 3196 116 DataStore Failed to find update with global id of 275507FF-DA9B-495F-A73B-68007AB524B1.200 (sessiondata = (null))
2018/11/20 16:12:38.9009443 3196 116 DownloadManager DO job initialized: JobId = {C8D699A5-1352-4B4E-95D0-634D517C7CC9}
2018/11/20 16:12:38.9074617 3196 116 DownloadManager Downloading from http://au.download.windowsupdate.com/c/msdownload/update/software/defu/2018/11/am_delta_75eb9d000fb2c03ae57c7a594ed2a7ba304c63fa.exe to C:\Windows\SoftwareDistribution\Download\bb723b7fcfc58c708712e3347d5d7584\75eb9d000fb2c03ae57c7a594ed2a7ba304c63fa (full file)
2018/11/20 16:12:38.9074845 3196 116 DownloadManager Created download job C8D699A5-1352-4B4E-95D0-634D517C7CC9; memory stream: No.
2018/11/20 16:12:38.9086074 3196 116 DownloadManager New download job {C8D699A5-1352-4B4E-95D0-634D517C7CC9} for UpdateId 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9447050 3196 116 DownloadManager Update the URLs for DO Job C8D699A5-1352-4B4E-95D0-634D517C7CC9 - Update 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9458440 3196 116 DownloadManager Download job C8D699A5-1352-4B4E-95D0-634D517C7CC9 resumed.
2018/11/20 16:12:38.9575708 3196 116 DownloadManager Dynamic download data fetcher for ServiceId 7971F918-A847-4430-9279-4A52D1EFE18D does not exist.
2018/11/20 16:12:38.9584692 3196 116 Agent Effective power state: AC; IsOnAC: Yes.
2018/11/20 16:12:38.9584805 3196 116 IdleTimer WU operation (DL.Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24), operation # 3919) stopped; does use network; is not at background priority
2018/11/20 16:12:38.9584859 3196 116 Agent Released network PDC reference for callId {A2E46DDC-A0AA-4209-A4CF-9F8F95E8C76A}; ActivationID: 3919
2018/11/20 16:12:38.9584991 3196 116 IdleTimer WU operation (DL.Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)) started; operation # 3920; does use network; is not at background priority
2018/11/20 16:12:38.9585051 3196 116 Agent Obtained a network PDC reference for callID {A2E46DDC-A0AA-4209-A4CF-9F8F95E8C76A} with No-Progress-Timeout set to 4294967295; ActivationID: 3920.
2018/11/20 16:12:38.9588365 3196 8296 Agent WU client calls back to download call {A2E46DDC-A0AA-4209-A4CF-9F8F95E8C76A} with code Call progress and error 0
2018/11/20 16:12:38.9589308 3196 9284 DownloadManager *FAILED* [80D03805] DO job {C8D699A5-1352-4B4E-95D0-634D517C7CC9} hit a transient error, updateId = 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9589542 3196 9284 DownloadManager Attempt no. 1 to resume the job
2018/11/20 16:12:38.9611872 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 7971F918-A847-4430-9279-4A52D1EFE18D does not exist.
2018/11/20 16:12:38.9615740 3196 116 DownloadManager * END * Begin Downloading Updates [CallerId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)] [Call ID = A2E46DDC-A0AA-4209-A4CF-9F8F95E8C76A] [hr = 0x00000000]
2018/11/20 16:12:38.9790097 3196 116 DownloadManager Update the URLs for DO Job C8D699A5-1352-4B4E-95D0-634D517C7CC9 - Update 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9795944 3196 116 DownloadManager Download job C8D699A5-1352-4B4E-95D0-634D517C7CC9 resumed.
2018/11/20 16:12:38.9840950 3196 9284 DownloadManager *FAILED* [80D03805] DO job {C8D699A5-1352-4B4E-95D0-634D517C7CC9} hit a transient error, updateId = 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9841088 3196 9284 DownloadManager Attempt no. 2 to resume the job
2018/11/20 16:12:38.9847388 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 7971F918-A847-4430-9279-4A52D1EFE18D does not exist.
2018/11/20 16:12:38.9889353 3196 9284 DownloadManager *FAILED* [80D03805] DO job {C8D699A5-1352-4B4E-95D0-634D517C7CC9} hit a transient error, updateId = 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9889529 3196 9284 DownloadManager Attempt no. 3 to resume the job
2018/11/20 16:12:38.9898052 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 7971F918-A847-4430-9279-4A52D1EFE18D does not exist.
2018/11/20 16:12:38.9929670 3196 9284 DownloadManager *FAILED* [80D03805] DO job {C8D699A5-1352-4B4E-95D0-634D517C7CC9} hit a transient error, updateId = 275507FF-DA9B-495F-A73B-68007AB524B1.200
2018/11/20 16:12:38.9929936 3196 9284 DownloadManager Will not attempt to resume the job as it has reached the maximum number of attempts.
When that fails, it then tries to download the latest Windows Defender update that is available from WSUS:
2018/11/20 16:12:39.4225142 3196 4176 ProtocolTalker ServiceId = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7}, Server URL = http://myserver.mydomain.local:8530/ClientWebService/client.asmx
2018/11/20 16:12:39.4225219 3196 4176 ProtocolTalker OK to reuse existing configuration
2018/11/20 16:12:39.4225264 3196 4176 ProtocolTalker Cached cookie has expired or new PID is available
2018/11/20 16:12:39.4225360 3196 4176 Misc Got WSUS SimpleTargeting URL: http://myserver.mydomain.local:8530""
2018/11/20 16:12:39.4239504 3196 4176 IdleTimer WU operation (CAuthorizationCookieWrapper::InitializeSimpleTargetingCookie) started; operation # 3944; does use network; is at background priority
2018/11/20 16:12:39.4239549 3196 4176 ProtocolTalker Initializing simple targeting cookie, clientId = 8d518d50-a987-423f-851f-e12a18dff9c6, target group = Clients, DNS name = myclient.mydomain.local
2018/11/20 16:12:39.4239565 3196 4176 ProtocolTalker Server URL = http://myserver.mydomain.local:8530/SimpleAuthWebService/SimpleAuth.asmx
2018/11/20 16:12:39.4239790 3196 4176 WebServices Auto proxy settings for this web service call.
2018/11/20 16:12:39.4346715 3196 4176 IdleTimer WU operation (CAuthorizationCookieWrapper::InitializeSimpleTargetingCookie, operation # 3944) stopped; does use network; is at background priority
2018/11/20 16:12:39.4347687 3196 4176 IdleTimer WU operation (CAgentProtocolTalker::GetCookie_WithRecovery) started; operation # 3945; does use network; is at background priority
2018/11/20 16:12:39.4431387 3196 4176 IdleTimer WU operation (CAgentProtocolTalker::GetCookie_WithRecovery, operation # 3945) stopped; does use network; is at background priority
2018/11/20 16:12:39.4431502 3196 4176 ProtocolTalker PTInfo: Server requested registration
2018/11/20 16:12:39.4586679 3196 4176 IdleTimer WU operation (CAgentProtocolTalker::SyncUpdates_WithRecover) started; operation # 3946; does use network; is at background priority
2018/11/20 16:12:39.4632853 3196 4176 IdleTimer WU operation (CAgentProtocolTalker::SyncUpdates_WithRecover, operation # 3946) stopped; does use network; is at background priority
2018/11/20 16:12:39.4653627 3196 4176 ProtocolTalker Skipping driver sync because it's not required.
2018/11/20 16:12:39.4653653 3196 4176 ProtocolTalker SyncUpdates round trips: 1
2018/11/20 16:12:39.4841767 3196 4176 Agent Update 18E22D6A-38CC-4188-9C3E-85AEAD12836F.200 is pruned out due to potential supersedence
2018/11/20 16:12:39.4841795 3196 4176 Agent Update 7E1AD319-05B3-42A0-9F32-4595DC84ADED.200 is pruned out due to potential supersedence
2018/11/20 16:12:39.4841879 3196 4176 Agent Added update 52DFAB3A-3EA4-48F5-8113-CEC6B3F60190.200 to search result
2018/11/20 16:12:39.4841994 3196 4176 Agent Found 1 updates and 4 categories in search; evaluated appl. rules of 78 out of 90 deployed entities
2018/11/20 16:12:39.4870470 3196 4176 Agent * END * Finding updates CallerId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24), Id = 477, Exit code = 0x00000000 (cV = T0EMouSApU+loA0S.1.0.0.2)
2018/11/20 16:12:39.4886763 3196 4176 IdleTimer WU operation (CSearchCall::Init ID 477, operation # 3939) stopped; does use network; is not at background priority
2018/11/20 16:12:39.5002887 13060 6680 ComApi *RESUMED* Search ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24), ServiceId = 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 (cV = T0EMouSApU+loA0S.1.0.0)
2018/11/20 16:12:39.5026211 13060 6680 ComApi * END * Search ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24), Updates found = 1, ServiceId = 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 (cV = T0EMouSApU+loA0S.1.0.0)
2018/11/20 16:12:39.5028860 13060 11288 ComApi * END * All federated searches have completed. Jobs = 1, Succeeded = 1, ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24) (cV = T0EMouSApU+loA0S.1.1)
2018/11/20 16:12:39.5053368 13060 10536 ComApi * START * Federated Download ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24) (cV = T0EMouSApU+loA0S.2.0), SessionData = (null)
2018/11/20 16:12:39.5058487 13060 2692 ComApi Federated Download: Starting download for 1 service(s) (cV = T0EMouSApU+loA0S.2.0)
2018/11/20 16:12:39.5059638 13060 2692 ComApi * START * Download ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)
2018/11/20 16:12:39.5059655 13060 2692 ComApi Flags: 0X10012; Download priority: 2; Network Cost Policy: 4
2018/11/20 16:12:39.5059661 13060 2692 ComApi Updates in request: 1
2018/11/20 16:12:39.5059741 13060 2692 ComApi ServiceID = {3DA21691-E39D-4DA6-8A4B-B43877BCB1B7} Managed
2018/11/20 16:12:39.5079730 3196 116 Agent Effective power state: AC; IsOnAC: Yes.
2018/11/20 16:12:39.5079829 3196 116 IdleTimer WU operation (DL.Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)) started; operation # 3954; does use network; is not at background priority
2018/11/20 16:12:39.5079864 3196 116 Agent Obtained a network PDC reference for callID {14C74FA0-5CC5-42CC-B1CD-A26D25350577} with No-Progress-Timeout set to 4294967295; ActivationID: 3954.
2018/11/20 16:12:39.5082931 13060 2692 ComApi *QUEUED* Download ClientId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)
2018/11/20 16:12:39.5085394 3196 116 DownloadManager * START * Begin Downloading Updates [CallerId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)] [Call ID = 14C74FA0-5CC5-42CC-B1CD-A26D25350577]
2018/11/20 16:12:39.5085445 3196 116 DownloadManager Priority = 2, NetworkCostPolicy = 4, Interactive = 1, Download on Battery = 0, Bypass Regulation = 1, Owner is system = 1, Proxy session id = -1, ServiceId = 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7.
2018/11/20 16:12:39.5085452 3196 116 DownloadManager Updates to download = 1
2018/11/20 16:12:39.5085468 3196 116 Agent Title = Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.281.459.0)
2018/11/20 16:12:39.5085493 3196 116 Agent UpdateId = 52DFAB3A-3EA4-48F5-8113-CEC6B3F60190.200
2018/11/20 16:12:39.5085500 3196 116 Agent Bundles 1 updates:
2018/11/20 16:12:39.5085519 3196 116 Agent 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5125550 3196 116 DownloadManager Update the URLs for DO Job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 - Update 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5137020 3196 116 DownloadManager Download job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 resumed.
2018/11/20 16:12:39.5140417 3196 116 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5157612 3196 116 DownloadManager Update the URLs for DO Job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 - Update 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5172702 3196 116 DownloadManager Download job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 resumed.
2018/11/20 16:12:39.5178299 3196 116 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5184239 3196 116 Agent Effective power state: AC; IsOnAC: Yes.
2018/11/20 16:12:39.5184316 3196 116 IdleTimer WU operation (DL.Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24), operation # 3954) stopped; does use network; is not at background priority
2018/11/20 16:12:39.5184352 3196 116 Agent Released network PDC reference for callId {14C74FA0-5CC5-42CC-B1CD-A26D25350577}; ActivationID: 3954
2018/11/20 16:12:39.5184563 3196 116 IdleTimer WU operation (DL.Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)) started; operation # 3955; does use network; is not at background priority
2018/11/20 16:12:39.5184595 3196 116 Agent Obtained a network PDC reference for callID {14C74FA0-5CC5-42CC-B1CD-A26D25350577} with No-Progress-Timeout set to 4294967295; ActivationID: 3955.
2018/11/20 16:12:39.5188261 3196 9284 DownloadManager *FAILED* [80D03805] DO job {020DC8F0-D91A-4073-86F2-AC5485A3F5B8} hit a transient error, updateId = 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5188390 3196 9284 DownloadManager Attempt no. 1 to resume the job
2018/11/20 16:12:39.5188460 3196 8296 Agent WU client calls back to download call {14C74FA0-5CC5-42CC-B1CD-A26D25350577} with code Call progress and error 0
2018/11/20 16:12:39.5196094 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5200174 3196 116 DownloadManager * END * Begin Downloading Updates [CallerId = Windows Defender Antivirus (77BDAF73-B396-481F-9042-AD358843EC24)] [Call ID = 14C74FA0-5CC5-42CC-B1CD-A26D25350577] [hr = 0x00000000]
2018/11/20 16:12:39.5213484 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5250780 3196 116 DownloadManager Update the URLs for DO Job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 - Update 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5257006 3196 116 DownloadManager Download job 020DC8F0-D91A-4073-86F2-AC5485A3F5B8 resumed.
2018/11/20 16:12:39.5262734 3196 9284 DownloadManager *FAILED* [80D03805] DO job {020DC8F0-D91A-4073-86F2-AC5485A3F5B8} hit a transient error, updateId = 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5262939 3196 9284 DownloadManager Attempt no. 2 to resume the job
2018/11/20 16:12:39.5268244 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5274422 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5293637 3196 9284 DownloadManager *FAILED* [80D03805] DO job {020DC8F0-D91A-4073-86F2-AC5485A3F5B8} hit a transient error, updateId = 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5293756 3196 9284 DownloadManager Attempt no. 3 to resume the job
2018/11/20 16:12:39.5300456 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5312535 3196 9284 DownloadManager Dynamic download data fetcher for ServiceId 3DA21691-E39D-4DA6-8A4B-B43877BCB1B7 does not exist.
2018/11/20 16:12:39.5332270 3196 9284 DownloadManager *FAILED* [80D03805] DO job {020DC8F0-D91A-4073-86F2-AC5485A3F5B8} hit a transient error, updateId = 326BD74E-C345-486A-B7FF-4989738A74F5.200
2018/11/20 16:12:39.5332418 3196 9284 DownloadManager Will not attempt to resume the job as it has reached the maximum number of attempts.
2018/11/20 16:12:39.5346906 3196 9284 DownloadManager *FAILED* [80D03805] Error occurred while downloading update 326BD74E-C345-486A-B7FF-4989738A74F5.200; notifying dependent calls.
Wednesday, November 21, 2018 8:37 AM
Hi,
Thank you for your posting.
Regarding to your question, this might have something to do with permission on the WSUS folder. You can test http access to the Content virtual directory in IIS (Right-click -> Manage Virtual Directory -> Browse) to see if you have any error.
You can refer to this thread for more details to see if it helps:
Regarding to your questions, you can go to WSUS Forum for further troubleshooting:
http://social.technet.microsoft.com/Forums/en-us/winserverwsus/
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.
Regards
Eva
Please remember to mark the replies as answers if they help.
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Wednesday, November 21, 2018 5:31 PM
Eva,
As mentioned, this is not just a WSUS issue. It also happens when trying to download directly from Microsoft. What is the appropriate forum for Windows Update issues?
Mark Berry
Thursday, December 6, 2018 8:39 AM
Did you find a way to download updates ? I have the same symptoms on a fresh 1809 installation.
Wsus is working with my other Windows 10 Build.
Thursday, December 6, 2018 5:24 PM
Still working on this. It fixed itself for a few days, then went back to the transient errors. I have a ticket open with Microsoft support.
Thursday, December 6, 2018 5:51 PM
Interesting ... I haven't been controlling that by policy ... will turn it off on one machine and see what happens. I've been getting the errors even with local WSUS, so LAN optimization isn't needed.
Tuesday, December 18, 2018 2:58 PM
LEGEND!!!!!
Tuesday, February 26, 2019 8:50 PM
I thought I was testing the Download Mode fix suggested by LettuceCat9 on one machine back in December, but I can't recall the results. However, five days ago, I set it as a policy for all Windows 10 devices and it does in fact seem to work around the issue. Basically it is saying "Don't use Delivery Optimization (DO); use BITS instead." For some reason, DO was not working in this environment. Seems of minimal benefit anyway when you are using WSUS--the purpose of DO, as I understand it, is to reduce Internet bandwidth by downloading from peers when possible.
Credit to this thread for pointing to the Download Mode fix again:
Blogging here:
Tuesday, February 26, 2019 8:53 PM
@LettuceCat9, out of curiosity, what brand of switches are you using in the environment where you had this issue? I'm wondering if this could be an issue with Ubiquiti UniFi equipment. Then again, this is the only WSUS environment where I have Win10 machines at the moment...
Wednesday, February 27, 2019 8:28 AM
We are using Cisco for our network and everything is wired, no wifi.
Wednesday, February 27, 2019 5:20 PM
Great thanks. That confirms that the Delivery Optimization issue is probably not related to network hardware or configuration.