Google suites Google Workspace keep disconnect me

[ABUELKHAIR]

I have FortiGate 61E and we use Google suites Google Workspace for our office email, chat, etc. 

We have wired issue that the Google Gmail, chat, etc. keep disconnect the users and they cant connect again, during that time all other sites will open with no issues! only Google work place including Gmail will stop working with the following error 

 

We disabled all the UTM (WEB DNS SSL, IPS, etc. ) with no luck 

We replaced the FortiGate with new one that dose not have UTM licenses with no luck.

We replaced the switch as will 

We are using the FortiGuard DNS server, and we changed the DNS to 8.8.8.8 and 8.8.4.4 with no luck 

its randomly happening 

if we did not do anything will resolve itself within few min 

Any suggestion 

[adambomb1219]

Really need more information here.  Are you using any AD/user based rules?  Disabled Layer7 inspection features how?  Making a new policy?  Anything of suspect in the logs for this host?  Is there any host-level web filtering software?  

[respoz]

Hi friends...

Do you find any solution???

I have the same problem