What version of windows 10 are you running?
Error code 0x80070424 denotes The specified service does not exist as an installed service.
You could try the following steps:
Download w10-wuauserv.zip, unzip and extract the contents to a folder
Run the file w10-wuauserv.reg and click Yes when asked for confirmation.
The registry file restores the Windows Update service registry key (wuauserv) located in the following registry branch:
After running the REG file, restart Windows.
When you open the Services console (services.msc) after restarting Windows, the Windows Update service should be listed and status shown as running.
If that doesn’t work, I suggest you download the latest version through Media creation tool or ISO file.
This will save your files and apps while bringing you up to the latest version by the most stable method. It will also bring all of your Updates current and solve most problems since it reinstalls Windows.
Hope above information can help you.