kb4012212 What to do if the update fails

Solution: 1. Re-download the update file; 2. Check the system time and date settings; 3. Turn off the firewall and security software; 4. Clean up temporary files and software distribution folders; 5. Perform system file check ; 6. Reset Windows Update components; 7. Use Windows Update troubleshooting tools; 8. Manually install updates.

When the KB4012212 update fails, you can try the following solutions:

1. Re-download the update file: Sometimes the update file may be damaged Or if it is incomplete, you can try to download the update file again and install it. Update files can be downloaded manually from the official Microsoft website or Windows Update Catalog.

2. Check the system time and date settings: Make sure the system time and date settings are correct, as incorrect time and date settings may cause the update to fail.

3. Turn off firewall and security software: Sometimes firewall and security software may interfere with the update process. You can try turning them off temporarily and then reinstall the update.

4. Clean temporary files and software distribution folders: Temporary files and residual files in the software distribution folder may cause the update to fail. You can use the disk cleanup tool to clean these files.

5. Perform a system file check: Running the System File Check tool (SFC) can scan and fix errors in system files, which may help resolve update failure issues. You can perform a system file check by running the "sfc /scannow" command in the command prompt.

6. Reset Windows update components: Sometimes there may be problems with Windows update components. You can try to reset them to solve the problem of failed updates. You can run the following commands as an administrator in the command prompt:

- net stop wuauserv

- net stop cryptSvc

- net stop bits

- net stop msiserver

- ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

- ren C:\Windows\System32\catroot2 catroot2.old

- net start wuauserv

- net start cryptSvc

- net start bits

- net start msiserver

7. Use the Windows Update Troubleshooting Tool: Windows provides an update Troubleshooting tool that automatically detects and fixes update-related issues. The tool can be found in the Update & Security section of Windows Settings.

8. Manually install updates: If none of the above methods solve the problem, you can try to manually install updates. You can download the update file from Microsoft's official website and follow the instructions to install it manually.

If the above methods still cannot solve the problem of update failure, it is recommended to contact Microsoft customer support or seek help from professional technicians, who may provide more specific solutions.

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