Category: Outlook

Outlook login loop

When Outlook connecting to Office 365 continually asks for password, but does not provide an error message, or tell you the credentials were wrong.

  1. Type regedit and press Enter. If you get a UAC prompt, click OK and proceed
  2. In the left navigation pane, locate and click HKEY_LOCAL_MACHINE
  3. Open the next subfolder named SOFTWARE
  4. Afterwards locate the folder Microsoft and under that open Cryptography
  5. Under Cryptography folder you will find the folder Protect and the subfolder Providers inside it.
  6. Locate df9d8cd0-1501-11d1-8c7a-00c04fc297eb under Providers
  7. After selecting df9d8cd0-1501-11d1-8c7a-00c04fc297eb look for ProtectionPolicy on the right side, if it doesn’t exists then create the DWORD 32bit value and name it as ProtectionPolicy.
  8. Double click on ProtectionPolicy and change the registry entry value to 1.

No need to reboot, just open Outlook again.