WebDAV Apache User Authentication via htaccess not possible

Nextcloud version 13.0.0:
Operating system and version Debian 9 Stretch (Raspbian):
Apache or nginx version 2.4.25:
PHP version 7.0.27:

The issue you are facing:
Authenticating users via .htaccess file (Basic HTTP Authentication and Digest HTTP Authentication) does not work with Nextcloud Client App for iOS. If a server wants to authenticate the user via HTTP authentication, there is no prompt as in Safari or any other browser that asks for the username and password. Instead, the requested authentication is not handled and the user receives a 401 error code.

Is this the first time you’ve seen this error? N:

Steps to replicate it:

  1. Try to connect to a server with HTTP Authentication
  2. Click on ‘Log in’
  3. An UIAlertController appears, presenting the 401 error.

try to use APP password.

This looking like: NXT 13.0.0 + TOTP and Cyberduck: failing

Nextcloud is already using HTTP authentication, I don’t think that you can easily chain up different procedures (perhaps with proxies??).