Solutions to Windows Update Error 0x80070020 include: 1. Restart Windows Update, BITS and Cryptographic Services services, and set it to automatically start if necessary; 2. Run CMD as an administrator, execute the sfc /scannow, DISM /Online /Cleanup-Image /ScanHealth and DISM /Online /Cleanup-Image /RestoreHealth commands to repair system files; 3. Temporarily close third-party antivirus software or firewall to eliminate software interception problems; 4. Enter %windir%\SoftwareDistribution to delete cache files and restart the computer, and force updates to download and install again. Following the above steps usually solves the problem.
Windows update error code 0x80070020 is usually because the system conflicts with a service or program when trying to install the update. This problem is not rare, but if not processed, it may cause updates to fail continuously, affecting system security and stability. The solution is actually not complicated, the key is to find the conflict points and deal with them.

1. Restart related services (keywords: Windows Update service)
In many cases, this error is caused by the Windows Update service being occupied or running abnormally. You can solve the problem by restarting the related services:
- Open the "Run" window (Win R), enter
services.msc
to enter - Find the following three services in the service list:
- Windows Update
- Background Intelligent Transfer Service (BITS)
- Cryptographic Services
Right-click to select "Restart" respectively. If these services are in a "stopped" state, start first.

Sometimes, even if the problem is not resolved after restart, you can try changing the startup type of these services to "automatic" to ensure that they load normally when the system starts.
2. Repair tools that come with the running system (keywords: system file check)
System files corruption may also cause update failures. At this time, you can use the SFC and DISM tools that come with the system to repair:

- Open Command Prompt as Administrator (CMD)
- Enter the following commands and execute them in turn:
sfc /scannow DISM /Online /Cleanup-Image /ScanHealth DISM /Online /Cleanup-Image /RestoreHealth
These commands scan and repair system files. This step is very critical especially when the system disk has bad channels or files are corrupted. The entire process may take more than ten minutes, and do not force the window to close during this period.
3. Temporarily close antivirus software or firewall (keywords: third-party security software)
Some third-party antivirus software or firewalls will intercept Windows Update's behavior, which will raise the error 0x80070020. If you have installed Kaspersky, Turfur, 360 and other software, it is recommended to temporarily close them and try to update:
- Just disable the real-time protection function temporarily, you don't have to uninstall it
- If you are not sure which software causes interference, you can test it one by one
Defender, which comes with Windows, generally does not cause this problem, but if you replace the default settings before, you can also check whether its exclusions are configured correctly.
4. Manually delete the update cache (keywords: clear the update cache)
If none of the above methods are useful, it may be that there is a problem with the update cache. You can try to manually clear the cache directory of Windows Update:
- Also open the "Run" window, enter
%windir%\SoftwareDistribution
to enter - After entering this folder, select all contents and delete them (if it cannot be deleted, you can restart and try again)
- After the deletion is complete, restart the computer and try to update again
This step is equivalent to letting the system download update files from scratch, which is suitable for some cases where updates fail in the middle.
Basically these common ways of dealing with it. In most cases, the problem can be solved by operating in sequence. If it still doesn't work, it may be a deeper system problem and you may need to consider resetting the system or contacting Microsoft support.
The above is the detailed content of How to fix error 0x80070020. For more information, please follow other related articles on the PHP Chinese website!

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