Haven't played in a bit installed new client when I try to join or host games I get a 'Update Not Downloadable' popup with the text:
Failed to download Update from
https://content.faforever.com/legacy-featured-mod-files/ipdates_faf_files/ForgeAlliance.3744.exe
verify=1665537219-6%2Bv1zhwtNmmmdl5ddgVCVLDsQIJYu3zxxy9JYTE0QU%3d
Update not downloadable
Tried to deactivate any security software for testing purpose?
Tried to redownload the last release?
Are you starting old replays by any chance?