Fix Chrome Update Error 12 Caused by Antivirus - How to Fix Cloudflare Error 525: SSL Handshake Failed-Resolve WSUS Version Mismatch with Windows 10/11

Updated 2026-06-13 12:40:19browser-issues

Fix Chrome Update Error 12 Caused by Antivirus - How to Fix Cloudflare Error 525: SSL Handshake Failed-Resolve WSUS Version Mismatch with Windows 10/11

Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

Restart the affected app after changing permissions or configuration files.
Test the same workflow in a clean browser profile or a temporary user account.
Compare the result on another network if the error may be connection related.