Can't login to Web Interface anymore

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1

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Expected Behaviour:

I recently installed Pihole on a Raspberry Pi that runs Ubuntu 24.04.2 LTS. The install went smooth and the system is/was running just as it should. The version installed and running is:

Core version is v6.0.5 (Latest: v6.0.5)
Web version is v6.0.2 (Latest: v6.0.2)
FTL version is v6.0.4 (Latest: v6.0.4)

Since yesterday I can't login to the webinterface anymore. I see the login screen, but when I type in the password and hit enter, I just get back to the same login page again. I did flush the cache and cookies, but that didn't help. When I check the console, I get a 401 (Unauthorized) error.

To make sure I do have the correct password, I did reset the password via the console, but that didn't help either.

[EDIT:] I did try different browsers and different computers to access the webinterface, but I get the same problem on all of them

How can I make the web interface working again?

Debug Token:

https://tricorder.pi-hole.net/j7bT1P32/

2

Ok, so I just figured out, if I use http://pihole/admin I can login, but if I try to login using the ip-address http://192.168.0.3/admin it does not work.
How can I use the IP address to login as well?

3

what IP address is associate with 'pihole' when u run a command nslookup pihole? Does it match with 192.168.0.3?

4

Yes, it points to 192.168.0.3.

C:\Users\user>nslookup pihole
Server:  pi.hole
Address:  192.168.0.3

Name:    pihole
Addresses:  fe80::e65f:1ff:fe25:9574
          192.168.0.3
5

What happens exactly?
Do you see any error message on the browser? or on the browser Console (devtools)?

6

No error in the browser itself. In the console it says:

Failed to load resource: the server responded with a status of 401 (Unauthorized) When clicking on the provided link /api/auth:1 it says:

{"session":{"valid":false,"totp":false,"sid":null,"validity":-1,"message":"no SID provided"},"took":0.00020170211791992188}

7

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