Hi @Milan , please perform the following steps and let me know if it resolves your issue:
- Restart the Azure AD Connect Sync service on the machine where the AD Connect is installed.
- Check the connector's permissions: make sure the account you are using is an admin with the highest possible permissions on premises, and is a member of the enterprise admin group in your AAD and has the reset password permissions that are required for the password writeback to work.
- Ensure Network Connectivity. Check if the following addresses are allowed for outbound HTTPS access:
*.passwordreset.microsoftonline.com
*.servicebus.windows.net - Disable and re-enable the password writeback option from the Azure AD Connect Configuration wizard
If this answer helped you please mark it as "Verified" so other users may reference it.
Thank you,
James