它总是在“状态：准备安装 - 80%”时失败。
我已经尝试了所有我能想到的方法：
DISM.exe /Online /Cleanup-image /Scanhealth
sfc /scannow
删除 c:\Windows\SoftwareDistribution (https://community.spiceworks.com/topic/2223969-1809-update-error-at-install-0x80070490?page=1#entry-8486582）或“Windows 修复”（https://www.tweaking.com/content/page/windows_repair_all_in_one.html）。
我收到的 WindowsUpdate.logGet-WindowsUpdateLog也没有包含任何有用的信息。最后一条消息是：
[...]
2020-03-29 16:05:06.3603049 5044 13616 DownloadManager Downloading from http://tlu.dl.delivery.mp.microsoft.com/filestreamingservice/files/3b376681-46d3-4369-a7f1-3af38277adc8?P1=1585512870&P2=402&P3=2&P4=aCBW3EDTml8B3XQaaUTnexmcly%2bmH%2byssGFFFtbhnYX8QDW1RHpyPd4Opi2NSoMTypqeNB6%2btIJcpPn8xt0hvw%3d%3d to C:\WINDOWS\SoftwareDistribution\Download\9a7a8eff8aff2a1fe2261d6b7d7a8929\amd64_Microsoft-OneCore-ApplicationModel-Sync-Desktop-FOD-Package_rs4_release.17134.1304.180410-1804.cab (full file).
2020-03-29 16:05:06.3604000 5044 13616 DownloadManager Created download job 251FE845-A47A-400C-B811-5176752184E0; memory stream: No.
2020-03-29 16:05:06.3750224 5044 13616 DownloadManager New download job {251FE845-A47A-400C-B811-5176752184E0} for UpdateId 6EA6D7FF-D374-4148-AED4-0830478A03FC.1
2020-03-29 16:05:06.7986064 5044 13616 DownloadManager Update the URLs for DO Job 251FE845-A47A-400C-B811-5176752184E0 - Update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1
2020-03-29 16:05:07.1322490 5044 13616 DownloadManager Download job 251FE845-A47A-400C-B811-5176752184E0 resumed.
2020-03-29 16:09:14.2221009 5044 5340 DownloadManager DO job {251FE845-A47A-400C-B811-5176752184E0} completed successfully, updateId = 6EA6D7FF-D374-4148-AED4-0830478A03FC.1
2020-03-29 16:09:15.7372836 5044 13616 DownloadManager Queueing update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1 for download handler request generation.
2020-03-29 16:09:15.8376936 5044 7388 DownloadManager Generating download request for update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1.
2020-03-29 16:09:15.9092473 5044 7388 DownloadManager Calling into handler 0xc to generate download request for update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1.
2020-03-29 16:09:15.9389298 5044 6840 Misc Validating signature for C:\WINDOWS\SoftwareDistribution\Download\9a7a8eff8aff2a1fe2261d6b7d7a8929\DesktopDeployment.cab with dwProvFlags 0x00000080:
2020-03-29 16:09:15.9770877 5044 6840 Misc Microsoft signed: Yes
2020-03-29 16:09:16.0383498 5044 6840 Handler Using the update's service stack dll file 'C:\WINDOWS\SoftwareDistribution\Download\9a7a8eff8aff2a1fe2261d6b7d7a8929\Metadata\UpdateAgent.dll'
2020-03-29 16:09:16.9296167 5044 7388 Handler UUP GDR: Event Fired: TimeOut
2020-03-29 16:09:16.9296380 5044 7388 DownloadManager GenerateDownloadRequest returned WU_E_OPERATIONINPROGRESS for update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1.
2020-03-29 16:15:45.7517899 5044 6840 DownloadManager Subscribing to GDR Retry due to async handler trigger.
2020-03-29 16:15:46.1669676 5044 7388 DownloadManager Generating download request for update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1.
2020-03-29 16:15:46.2460245 5044 7388 DownloadManager Calling into handler 0xc to generate download request for update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1.
2020-03-29 16:15:46.2460364 5044 7388 Handler *FAILED* [80070490] UUP GDR: Completed
2020-03-29 16:15:46.2523025 5044 7388 DownloadManager *FAILED* [80070490] GDR
2020-03-29 16:15:46.5577866 5044 7388 DownloadManager *FAILED* [80070490] Error occurred while downloading update 6EA6D7FF-D374-4148-AED4-0830478A03FC.1; notifying dependent calls.
2020-03-29 16:15:46.6679550 5044 13616 DownloadManager * END * Download Call Complete Call 4 for caller UpdateOrchestrator has completed; signaling completion.
2020-03-29 16:15:46.6685862 5044 13616 Agent Effective power state: AC; IsOnAC: Yes.
2020-03-29 16:15:46.6685996 5044 13616 IdleTimer WU operation (DL.UpdateOrchestrator, operation # 425) stopped; does use network; is not at background priority
2020-03-29 16:15:46.6686071 5044 13616 Agent Released network PDC reference for callId {7C31AE7B-B2E8-4E9D-9FAE-E69C5EEB4AA5}; ActivationID: 425
2020-03-29 16:15:46.6689426 5044 5276 ComApi *RESUMED* Download ClientId = UpdateOrchestrator
2020-03-29 16:15:46.6689474 5044 5276 ComApi Download call complete (succeeded = 0, succeeded with errors = 0, failed = 1, cancelled = 0, unaccounted = 0)
2020-03-29 16:15:46.6689588 5044 5276 ComApi ClientId = UpdateOrchestrator: Exit code = 0x00000000; Call error code = 0x80240022
2020-03-29 16:15:46.6689608 5044 5276 ComApi * END * Download ClientId = UpdateOrchestrator
2020-03-29 16:15:46.6689667 5044 5276 Agent WU client calls back to download call {7C31AE7B-B2E8-4E9D-9FAE-E69C5EEB4AA5} with code Call complete and error 0x80070490
2020-03-29 16:15:46.6693800 5044 5796 ComApi Download call complete (succeeded = 0, succeeded with errors = 0, failed = 1, cancelled = 0, unaccounted = 0)
2020-03-29 16:15:46.6693911 5044 5796 ComApi * END * All federated downloads have completed. ClientId = UpdateOrchestrator (cV = Kuodo0a890eUtjBr.3.1)
2020-03-29 16:15:46.6823141 5044 13616 DownloadManager DynamicDownloadDataFetcher Refresh Svc: {8B24B027-1DEE-BABB-9A95-3517DFB9C552}
2020-03-29 16:15:46.6823196 5044 13616 DownloadManager *FAILED* [8024000C] DynamicDownloadDataFetcher Refresh complete
这真是令人沮丧。有希望在不重新安装 Windows 的情况下安装更新吗？
答案1
由于其他建议不起作用，下一步是从媒体创建链接运行 Windows 10 修复安装。使用第二个链接，就地运行，并在适当的位置保留所有内容。
https://www.microsoft.com/en-us/software-download/windows10
假设它有效（通常有效）它会将你置于 V1909。