Problem with enabling http2 in firefox

[VD17593]

I've enabled http2 as described in docs:

uncommented: LoadModule http2_module modules/mod_http2.so
added: Protocols h2 h2c http/1.1

It's working fine in most browsers, but in firefox it is not working (get blank page).

I've looked at this post:
' Problem with enabling http2 ' ( https://community.apachefriends.org/viewtopic.php?f=16&t=72462&p=247435&hilit=http2#p247435 )
where the issue was solved by removing protocols h2 http/1.1.
The problem with that solution is that it's no http2 anymore that is used but http/1.1.

Does anyone had the same problem, and found the solution?

[VD17593]

Solved.

Had to change the SSLCipherSuite as described here
https://harrytang.xyz/blog/xampp-http2-ssl-localhost