HKEY_CURRENT_USER\software\policies\microsoft\exchange

Autodiscover is always capable of using modern authentication
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\alwaysusemsoauthforautodiscover
Prevent adding non-default Exchange accounts
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\disablemultipleexchange
Set maximum number of Exchange accounts per profile
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\maxnumexchange
Set maximum number of Exchange accounts per profile
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\maxnumexchange
Restrict legacy Exchange account
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\restrictlegacyexchangeaccount
Prevent adding non-default Exchange accounts
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\disablemultipleexchange
Set maximum number of Exchange accounts per profile
- HKEY_CURRENT_USER\software\policies\microsoft\exchange\maxnumexchange