State of knowledge

Oktober 2026

ProCall 8 UCServer
MetaDirectory Server

Observation

During the installation of ProCall Enterprise Server or MetaDirectory Server fails to connect to UCConnect . The error message “Error communicating with the server. Please contact support” is displayed.

Example screenshot of UCServer installation: Connect via UCConnect – enter ServerID and password – error message: “Error communicating with the server”

The file "%temp%\ucserver_install.log" created during installation logs the following message:

This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.

Possible cause

Security configuration in Windows: FIPS mode enabled

The mode FIPS (Federal Information Processing Standards) is enabled in the Microsoft Windows operating system and blocks certain algorithms. 

Solution/Procedure

Open Use the keyboard shortcut Windows key + R to open the dialogue box and type in secpol.msc to launch the programme.  Confirm by pressing Enter.

Navigate to: Local policies > Security options.

Look for the entry ‘System cryptography: Use FIPS-compliant algorithms for encryption, hashing and signing’.

Set the option to Disabled.