Web browser will not allow access to SP-C web interface via HTTPS connection due to TLS error

[Mahmoud_Sayed]

Issue

Cannot access SP-C web interface due to TLS error.

Chrome error: ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Edge error: ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Firefox error: SSL_ERROR_UNSUPPORTED_VERSION

Product Line

EcoStruxure Security Expert

Environment

Security Expert Controller (SP-C)

Cause

As per the table below, SP-C with OS  2.0.24 or lower does not support TLS 1.2.  A modern web browser will block access to sites that use TLS 1.0 or 1.1.  

Resolution

 If TLS 1.2 support is required, an OS upgrade to 2.0.25 or higher is required:

1. Upgrade the controller's firmware to a version that supports HTTPS, as explained in: 
   AN 314 Security Expert - HTTPS Connection to the Security Expert Controller - Integration Guide
2. If the current SP-C OS version is 2.0.24 or lower, contact Schneider Electric support to acquire the upgrade package and further documentation.