Tasmota: Sonoff Username and password request

[Massy1430]

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I flashed a Sonoff 4CH PRO R2 with ESPeasy - sonoff.bin and it went good. Then I accidentally modified the web admin password in Configure Other. Since then, when I try to get access to Sonoff Ip address, I get a message asking me username and password. I tried all kind of words without succeed.
Do I have flash it again? I would like to understand the problem and what's this password for.
Thank you

Make sure these boxes are checked [x] before submitting your issue - Thank you!

• [ ] Searched the problem in issues (https://github.com/arendst/Sonoff-Tasmota/issues)
• [ ] Searched the problem in the wiki (https://github.com/arendst/Sonoff-Tasmota/wiki/Troubleshooting)
• [ ] Searched the problem in the forum (https://groups.google.com/d/forum/sonoffusers)
• [ ] Searched the problem in the chat (https://discord.gg/Ks2Kzd4)
• [x] Development/Compiler/Upload tools used: ESPeasy flash
• [x] Hardware used: Sonoff 4CH PRO R2
• [x] If a pre-compiled release or development binary was used, which one? : sonoff-IT.bin
• [x] You have tried latest release or development binaries? : development binaries
• [ ] Provide the output of command status 0 :

STATUS 0 OUTPUT HERE

(Please, remember to close the issue when the problem has been addressed)

[netpok]

You set up a password for the webinterface, you can login with the username admin and the password you entered.

If you don't remember that password:
Option 1: You have serial connection to the device: Execute WebPassword 0 through serial

Option 2: You have configured mqtt: Send 0 to cmnd/<device-topic>/WebPassword

Option 3: if above not available:
Since tasmota uses GET request for forms you should check your history, maybe it's there look for entries with name of Sonoff - Save configuration where Sonoff is the configured name of the device.

for example the following link
http://sp10/co?t1=%7B%22NAME%22%3A%22Generic%22%2C%22GPIO%22%3A%5B23%2C22%2C24%2C17%2C134%2C132%2C0%2C0%2C131%2C52%2C21%2C0%2C0%5D%2C%22FLAG%22%3A0%2C%22BASE%22%3A67%7D&p1=SecretPassword&b1=on&a1=Sonoff&a2=Sonoff2&a3=Sonoff3&a4=Sonoff4&b2=0&save=
contains the password (SecretPassword in this case) for web interface in the p1 parameter.

Option 4: If you are using WifiConfig 7 as connection backup tool then you can reset the device when there is no wifi connection available for it.

Option 5: If nothing helps, then you have to erase and reflash the firmware.

[Massy1430]

Thanks for the answer!
Actually I remember the web admin password, but I don't know the username, I didn't added it anywhere. In "Configure Other" there is just the space for the password.

Regarding option 2, I have configured mqtt with Home Assistant. From which platform should I send this command? Sorry but I'm a begginner of Tasmota/MQTT.

Thank you

[netpok]

The username is admin

About option 2 you can send it from any mqtt client, you can even use another sonoff device just execute the command Publish cmnd/<device-topic>/WebPassword 0 in the console.

[Massy1430]

It worked with the username "admin".

Thanks a lot netpok!!

[netpok]

Happy to help, please close the issue.

[meingraham]

@netpok I took the liberty of adding this great information to the FAQ. Please review it to make sure I have captured the information correctly.

Cheers!

Mike

[Caswell1000]

You set up a password for the webinterface, you can login with the username admin and the password you entered.

If you don't remember that password:
Option 1: You have serial connection to the device: Execute WebPassword 0 through serial

Option 2: You have configured mqtt: Send 0 to cmnd/<device-topic>/WebPassword

Option 3: if above not available:
Since tasmota uses GET request for forms you should check your history, maybe it's there look for entries with name of Sonoff - Save configuration where Sonoff is the configured name of the device.

for example the following link
http://sp10/co?t1=%7B%22NAME%22%3A%22Generic%22%2C%22GPIO%22%3A%5B23%2C22%2C24%2C17%2C134%2C132%2C0%2C0%2C131%2C52%2C21%2C0%2C0%5D%2C%22FLAG%22%3A0%2C%22BASE%22%3A67%7D&p1=SecretPassword&b1=on&a1=Sonoff&a2=Sonoff2&a3=Sonoff3&a4=Sonoff4&b2=0&save=
contains the password (SecretPassword in this case) for web interface in the p1 parameter.

Option 4: If you are using WifiConfig 7 as connection backup tool then you can reset the device when there is no wifi connection available for it.

Option 5: If nothing helps, then you have to erase and reflash the firmware.

Great answer, managed to get it via history - Option 3