I'm running the latest version of Firefox on Win 11 64 bit. In looking through settings, I noticed that DNS over HTTPS, which is set to the Cloudflare default, is inactive and giving the error (NS_ERROR_NET_INTERRUPT). Using NextDNS is fine. The problem is not unique to FF, as another Chrome-based browser has the same problem, and I have switched that to OpenDNS. I have been through all the possible causes and diagnostics for Cloudflare not working (firewall, running FF in safe mode etc.) but can't see anything. However, I did download the Cloudflare desktop application, and when this is running in background, the Cloudflare DNS/HTTPS settings work perfectly in both FF and the other browser. Whilst I can of course keep using the other DNS providers, I'd prefer Cloudflare, but I don't really want to have yet another app running and consuming resources, which would be the case with Cloudflare. If anyone has any suggestions for why Cloudflare isn't working, or how to fix it, I'd welcome them. I have searched high and low for more information, both here and elsewhere, but if such exists, I haven't found it.