Here is how to deal with Windows update error 80073701

1. SFC & DISM

Try running the Deployment Image Servicing and Management (DISM.exe) tool to fix corrupted system files. To do this, open an elevated command prompt. Next, run the command:

Dism / Online / Cleanup-image / Startcomponentcleanup and press Enter.

Next, restart your computer and try updating the system again.

Alternatively, you can run the System File Checker (SFC) to check for and fix problems in existing system files. To do this, also open Command Prompt and run the following command:

sfc / scannow, press Enter.

Restart your computer after fixing any errors that occurred and check if the error code 0x80073701 persists.

3. Work with logs

Check the CBS logs and remove any possible fixes.

In general, the file CBS.log includes component logs when they are installed or removed during upgrades. If updates are unsuccessful in the CBS logs, you need to uninstall the fixes that were missing assemblies.

So, open the CBS logs and look for the words "ERROR_SXS_ASSEMBLY_MISSING". Next, check if there is any KB update. If there is one, remove it and reinstall it using Windows Update.

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