The password synchronization process is not successfully synchronizing passwords from the source to the target environment, preventing migrated users from authenticating with their expected credentials.
To resolve the issue, follow one of the two approaches:
Uninstall the anti-virus software and reboot the Domain Controller (DC).
Add an exception in the anti-virus software for the folder:C:\Windows\BTpass
Note: Some anti-virus solutions, such as Carbon Black, may continue to block this folder even if “bypass mode” is enabled.