Reply To: H 264 DVR local network login failed

If your password is not working, most DVRs have an override password reset or master password that enables you to login to the DVR to reset the password. For example, here is a link to a page that shows you how to reset your password on iDVR-PRO CCTV DVRs.
https://www.cctvcamerapros.com/iDVR-PRO-Password-Reset-Instructions-s/895.htm

At this point, I would recommend doing that if you can find the instructions specific for your model DVR.