Samsung Galaxy stops synchronizing Exchange ActiveSync account after every OS update

On Samsung Galaxy S10 Exchange ActiveSync (outlook365) account stops synchronizing after each Samsung OS update. Our corporate IT policy requires a PIN to access the device when using the Android client. I needed always to delete and recreate the ActiveSync account to make it sync again. Today I have tried to just open the settings of Exchange server under setting/accounts in E-mail application and confirm it and it somehow started to sync again. Any clue how to easily fix those problems and what is the cause?