Check for relevant errors in the Windows Event Viewer. 2. Ensure that OTP is configured correctly in the Remote Access Management ...

1. Check for relevant errors in the Windows Event Viewer.
2. Ensure that OTP is configured correctly in the Remote Access Management console.
3. Apply DirectAccess policy with OTP disabled and then enable OTP again.
4. Verify that OTP settings have been activated on the Remote Access server.
5. Ensure that IIS is installed and running.
6. In a browser, type %1!s! to verify that the ISAPI extension application page opens correctly.