Hi!
Thank you for your help. One of your colleagues answered to the ticket and helped me to find the problem:
My basic auth was configured as:
AuthUserFile /var/www/webapphttps/.htpasswd
AuthGroupFile /dev/null
AuthName "Sicherheitsabfrage"
AuthType Basic
<Limit GET>
require valid-user
</Limit>
–> That does lead to the 401 error
AuthUserFile /var/www/webapphttps/.htpasswd
AuthGroupFile /dev/null
AuthName "Sicherheitsabfrage"
AuthType Basic
#<Limit GET>
require valid-user
#</Limit>
Removing the “Limit” solved the problem.
Thank you and best wishes