The client side is Windows Server 2016, and an error message appears in his windowsupdatelog as follows:
Windows Update logs are now generated using ETW (Event Tracing for Windows).
Please run the Get-WindowsUpdateLog PowerShell command to convert ETW traces into a readable WindowsUpdate.log.
For more information, please visit http://go.microsoft.com/fwlink/?LinkId=5183452020-11-19 10:37:13:914 3708 2cb8 Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0800) ===========
2020-11-19 10:37:13:914 3708 2cb8 Misc = Process: d:\dcd5ae639fe195333362961397\wusetup.exe
2020-11-19 10:37:13:836 3708 2cb8 Setup Windows Update Client standalone setup : resource dll path is d:\dcd5ae639fe195333362961397\zhTW\wusetup.exe.mui
2020-11-19 10:37:13:929 3708 2cb8 Setup Evaluating CBS package "d:\dcd5ae639fe195333362961397\WUClient-SelfUpdate-Core-TopLevel.cab"
2020-11-19 10:37:14:445 3708 2cb8 Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:37:14:445 3708 2cb8 Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:37:14:445 3708 2cb8 Setup Evaluating CBS package "d:\dcd5ae639fe195333362961397\WUClient-SelfUpdate-ActiveX.cab"
2020-11-19 10:37:14:461 3708 2cb8 Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:37:14:461 3708 2cb8 Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:37:14:461 3708 2cb8 Setup Evaluating CBS package "d:\dcd5ae639fe195333362961397\WUClient-SelfUpdate-Aux-TopLevel.cab"
2020-11-19 10:37:14:570 3708 2cb8 Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:37:14:570 3708 2cb8 Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:37:31:039 3708 2cb8 Setup wusetup has finished. Exit code is 307. Reboot is NOT needed
2020-11-19 10:42:28:055 6448 2c6c Misc =========== Logging initialized (build: 7.4.7600.226, tz: +0800) ===========
2020-11-19 10:42:28:055 6448 2c6c Misc = Process: d:\fd719e56a7334910f647e0bf46f9\wusetup.exe
2020-11-19 10:42:27:962 6448 2c6c Setup Windows Update Client standalone setup : resource dll path is d:\fd719e56a7334910f647e0bf46f9\zhTW\wusetup.exe.mui
2020-11-19 10:42:28:055 6448 2c6c Setup Evaluating CBS package "d:\fd719e56a7334910f647e0bf46f9\WUClient-SelfUpdate-Core-TopLevel.cab"
2020-11-19 10:42:28:337 6448 2c6c Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:42:28:337 6448 2c6c Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:42:28:337 6448 2c6c Setup Evaluating CBS package "d:\fd719e56a7334910f647e0bf46f9\WUClient-SelfUpdate-ActiveX.cab"
2020-11-19 10:42:28:352 6448 2c6c Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:42:28:352 6448 2c6c Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:42:28:352 6448 2c6c Setup Evaluating CBS package "d:\fd719e56a7334910f647e0bf46f9\WUClient-SelfUpdate-Aux-TopLevel.cab"
2020-11-19 10:42:28:399 6448 2c6c Handler FATAL: UH: 0x80070307: CreatePackage failed in CCbs::CreatePackage
2020-11-19 10:42:28:399 6448 2c6c Setup WARNING: Failed to evaluate applicability, will try to install anyway, error = 0x80070307
2020-11-19 10:42:30:477 6448 2c6c Setup wusetup has finished. Exit code is 307. Reboot is NOT needed