If the defaults don't work, you can typically regain access using one of these methods: Software-Based Reset (Hikvision/Dahua)
If you lose your password, several recovery mechanisms may be available depending on the brand: ─ 4CH DVR ─ dvr login password
He typed the username: He typed the password: Sentinel2020! If the defaults don't work, you can typically
Once you're back in, prioritize security to prevent unauthorized access to your video feeds: How to Reset NVR and DVR without Password: CCTV Hacks If the defaults don't work
→ 204 No Content or 401 if old password wrong