I just did the most recent Windows 10 updates: KB5037768, KB5038350, KB5001716 My version is 22H2 for x64 and .Net 6.0.30 Upon finishing the update and rebooting, Firefox gave me the PR_CONNECT_RESET_ERROR on all websites. Not other browser was having an issue. I've tried all the troubleshooting steps I can find. Is there an error fix based on what I am describing that I can now try? Thanks!