We are about to roll out Polycom VVX411 phones using SfB but in our testing users are getting logged out seemingly randomly between 7-30 days. They do get an error "Exchange authentication failed. Sign out and sign in again." on their Polycom phones about 1-2 hours before the phone actually logs them out. We are running Polycom UC Software version 188.8.131.5257
We have MFA enabled for our end users also. We are using SfB and Exchange online, nothing on-prem.
Has anyone seen or fixed this issue in their environment?
@DamianCastillo, absolutely. We have no problems signing in. The issue is that our users are signed out automatically every 7 days. I have two cases open with Microsoft and no one can figure out what to change to prevent the sign outs.