Unable to Access Admin Page after Update

It is likely that you made the port change to lighttpd in file /etc/lighttpd/lighttpd.conf. This file contains the following warning at the top:

###############################################################################
#     FILE AUTOMATICALLY OVERWRITTEN BY PI-HOLE INSTALL/UPDATE PROCEDURE.     #
# ANY CHANGES MADE TO THIS FILE AFTER INSTALL WILL BE LOST ON THE NEXT UPDATE #
#                                                                             #
#              CHANGES SHOULD BE MADE IN A SEPARATE CONFIG FILE:              #
#                         /etc/lighttpd/external.conf                         #
###############################################################################

A permanent method of changing the lighttpd port (for lighttpd version 1.4.46 or later):

Check your lighttpd version with this command.

lighttpd -v

If that returns 1.4.46 or above, you can overwrite the port from Pi-hole's lighttpd.conf in your external.conf like this:

server.port := 8888

Note that the := operator isn't supported in older versions of lighttpd .

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