This article describes Windows Update Error Code 0x80070422. Error 0x80070422 is a Windows Error code.This error usually occurs during installation or Windows Update.It also states that Access is Denied. Disclaimers: Before you attempt to fix an issue with the windows update, we highly recommend you to take a registry backup and create a system restore point as a precaution method. In case if something goes wrong, we can restore your computer to the same stage and fix the issues. (In case if you not sure how to back it up, talk to an expert for assistance.)