What is the name of the domain?
What is the issue you’re encountering
Cloudflares acces controll/or waf rules via mTLS is not working with nextcloud
What are the steps to reproduce the issue?
Set up mTLS on the domain for the nextcloud server and try to login. It wont work. The desktop client for nextcloud is cabeble of presenting a client. But cloudflare is failing in communicating that it needs to present one in the first place