Lync Connectivity Analyzer crash on startup

The Lync Connectivity Analyser is a handy tool for troubleshooting some issues – and is available from

Recently i found it was crashing on startup, seemingly from a recent patch.

Uninstalling KB2840642v2 (.net framework 4.5 update) made it work again for me.

Obviously this might not be an issue for everyone…. either way, i hope the patch gets updated or the LCA gets updated soon-ish.

Leave a Reply