Outlook connection doesn't keep connected

[byyiro]

After an hour, every account disconnects and have to reconnect on every account in the "External accounts" tab... Need to keep it connected.
Another problem is some meetings doesn't get synced, even if they are on CRM calendar...
Log:

[2019-07-18 07:05:14] Espo.ERROR: Outlook Calendar Sync: NAME5 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []
[2019-07-18 07:10:21] Espo.ERROR: Outlook Calendar Sync: NAME1 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []
[2019-07-18 07:10:21] Espo.ERROR: Outlook Calendar Sync: NAME2 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []
[2019-07-18 07:10:22] Espo.ERROR: Outlook Calendar Sync: NAME3 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []
[2019-07-18 07:10:22] Espo.ERROR: Outlook Calendar Sync: NAME4 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []
[2019-07-18 07:10:22] Espo.ERROR: Outlook Calendar Sync: NAME5 could not connect to Outlook Server while trying to sunc calendar Calendario. [] []

[yuri]

Seems Outlook API was down. They removed all refresh tokens which should not be removed according specs.

[byyiro]

It happens every hour (tested four times). Is not an special situation.