Why can't I log in to the administration panelor the XPhone Connect Directory or why doesn't the Connect Client connect to the XPhone Server?

Issues:

The following error occurs while logging in to the XPhone Connect Server administration panel:

The following error occurs while logging in to the XPhone Connect Directory:

While the XPhone Connect Client tries to connect to the Server, the following message can be seen in the systray:

Solution:

Check the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Cryptography\Configuration\Local\SSL\00010003

The value in "Functions" needs to be equal to the following:

RSA/SHA512
ECDSA/SHA512
RSA/SHA256
RSA/SHA384
RSA/SHA1
ECDSA/SHA256
ECDSA/SHA384
ECDSA/SHA1
DSA/SHA1

Add the missing values. The XPhone Connect client is now able to connect to the XPhone Connect Server. Logging in to the administration panel as well as to the XPhone Connect Directory is now functional again.