Nextcloud version : 17.0.1
Operating system and version : Linux on shared hosting
Apache version : 2.4.41
PHP version : 7.1.33
Since a few days all my nextcloud clients (android, desktop,…) can no longer connect to my nextcloud instance with an error message (wrong username or password) while from my browsers I can normally connect to my instance with the same username and password rejected by the clients.
The android client also displays the following message “access failed: operation finished with HTTP status code 401 (fail)”.
Where should I investigate?