We are using E3, outlook 365 in our company. Some of our users’ outlook stop sync with exchange and ask for password, as shown in below image:

Reslove :

Setting the below registry key to 1 in below path often resolves it

• Path: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity
• Key: DisableADALatopWAMOverride (DWORD)

• Value : 1