https://livehelpbook.com/easy-steps-to-fix-this-windows-update-error-0x800b010a/ Easy Steps to fix this Windows Update Error 0x800b010a Error code 0x800b010a is a common Windows error that is encountered when there is an issue with the certificate verification process. This error is usually associated with the Windows Update feature, which is responsible for downloading and installing updates for the operating system.