Client Login not possible (HTTP/1.1" 401 306)


I have a problem login via Webdav. After installing OwnCloud 9.1.0 it's not possible to access the cloud using the windows client. Web interfaces is working as expected.

Steps to reproduce
1. Start windows client, enter URL, enter user and pw
2. Connection closed

Client configuration
Client version: 2.2.3
Client operating system: Windows 7 HP x64

Server configuration
Operating system: Cloudlinux 7.2, LVE enabled, CageFS enabled + cPanel
Web server: Apache 2.4 using CGI/FastCGI
Database: MariaDB 10.0
PHP version: 7.0.9
ownCloud version: 9.1.0, new installed


09-06 18:41:50:197 0x72beb68 unknown: ERRORING CURRENT QHttpNetworkReply(0x72ba970) QUrl( "" )
09-06 18:41:50:199 0x7eefd8 OCC::AbstractNetworkJob::slotFinished: void OCC::AbstractNetworkJob::slotFinished() 2 "Verbindung beendet" QVariant(Invalid)
09-06 18:41:50:199 0x7eefd8 OCC::PropfindJob::finished: PROPFIND request not successful, http result code is 0 ""


[06/Sep/2016:18:41:24 +0200] "GET /owncloud/status.php HTTP/1.1" 200 96 "-" "Mozilla/5.0 (Windows) mirall/2.2.3 (build 6307)"
[06/Sep/2016:18:41:24 +0200] "GET /owncloud/remote.php/webdav/ HTTP/1.1" 401 306 "-" "Mozilla/5.0 (Windows) mirall/2.2.3 (build 6307)"
[06/Sep/2016:18:41:42 +0200] "PROPFIND /owncloud/remote.php/webdav/ HTTP/1.1" 401 306 "-" "Mozilla/5.0 (Windows) mirall/2.2.3 (build 6307)"


The remote server returned an error: (405) Method Not Allowed.
at Rei.Fs.Webdav.WebdavFs.GetResponse(HttpWebRequest request, Boolean notreqstream)
at Rei.Fs.Webdav.WebdavFs.GetResourceOptions(Uri target)
at Rei.Fs.Webdav.ConnectionTestForm.Check()


So I am at my wit's end...what could it be?

Thanks in advance for your help!


Web server: Apache 2.4 using CGI/FastCGI

try to switch to either Apache + mod_php (officially supported) or nginx + php-fpm (community supported) which shouldn't show this issue.

For CGI/FastCGI you're mostly on your own when facing such webserver issues.