
How To Reset/Change Pi-Hole Web Admin interface/Dashboard password!
Pi-hole is a Linux network-level advertisement and Internet tracker blocking application which acts as a DNS sinkhole and optionally a DHCP server, intended for use on a private network. It is designed for low-power embedded devices with network capability, such as the Raspberry Pi, but supports any Linux machines. Pi-hole has the ability to block traditional website advertisements as well as advertisements in unconventional places, such as smart TVs and mobile operating system advertisements.
Source: https://en.wikipedia.org/wiki/Pi-hole.
Video Tutorial
Text Tutorial

- Open a terminal and type the following command:
sudo pihole -a -p
. - Enter New Password and Confirm it! (Nothing type for no/blank password).
- Done! Pi-Hole Password is changed!