Details
Various issues such as the messaging services not being available, proxy settings, and network problems can cause the Instant Messaging Chat button to be disabled but do not affect your status.
Solution
Check for the following:
If the messaging services are available.
Note:
Once the messaging services become available, Instant Messaging users must log out and into IMPAX to enable the Instant Messaging functionality.
If a proxy setting is blocking access.
If the network is experiencing problems.