# Manage TLS Protocol

By default, MSL supports the use of early TLS (TLS v1) for communications security. To migrate to the latest TLS version, you must upgrade your client softphones and devices and then disable support for the TLS version 1.0 protocol using the procedure outlined below. After these steps are complete, your system will be in compliance with the Payment Card Industry Data Security Standard (PCI DSS).

### Disable Support for TLS v1

To disable support for the TLS v1 protocol:

1. Log into the MiCollab Server Manager for a LAN-based MSL server.

2. Under Security, click Web Server.

3. Click the TLS tab.

4. To disable support for TLS version 1.0, clear Allow TLS v1.0.
   Your system is now in compliance with PCI DSS.

Notes:

- If you disable support for TLS version 1.0, users who employ older web browser such as Internet Explorer 9 or 10 will be denied Server Manager access. To resolve this problem, users should switch to using a newer browser or enable TLS version 1.2 in their existing browsers. In Internet Explorer, the TLS settings are located under Options > Advanced > Security.

- Some services, such as the MiCollab Client Service, are restarted automatically whenever you update the Allow TLS v1.0 setting. This ensures that the services are updated correctly.