Issue
- You have Single Sign-On (SSO) enabled and are receiving the Access Denied message when trying to enter your password at the pre-boot authentication login after changing your password within the user's Windows profile
Details
This issue occurs because a .dll file that relates to SSO fails to re-register itself correctly during a Windows 10 feature update.
Solution
- Open an elevated command prompt and type in the following commands:
cd %ProgramFiles%\DESlock+
regsvr32 dlpwpflt.dll
- Once completed, a dialog box will appear confirming that the .dll has been registered successfully.