Hi,
due to different reasons we would like to have our logins based on UID only disable login authentication by email address. The LDAP-Query for the login is configured as (uid=%uid), but still the login by email address is working.
Is it possible to disable the login by email address and restrict authentication to LDAP-UID only? We use NC version 23.0.3.2.
Warm regards, Tom
Hello @TomFernandes have you find out a solution to this?
More or less 
. We modified /var/www/nextcloud/core/l10n/de.js (the German translation file) and removed the string for the email-address, so that it only reads “login” and not “login or email-address”.
Does it get reported as checksum fail on the admin section? I guess you have to fix it every time you upgrade Nextcloud.
yes, I think you have to fix it on every update.