Lync Client Password Recovery

Mon, 12 Mar 2012 23:25:51 +0000

I wrote a small tool that dumps all stored password for the Microsoft Lync Client that I'd like to share here.

It's a commandline tool that takes no arguments:

Have fun with it!

Running multiple instances of Lync (howto)

Wed, 07 Mar 2012 22:55:37 +0000

Yesterday I showed a video demonstrating it's possible to run multiple instances of the Microsoft Lync 2010 client simultaneously.

A little warning before we go on: the Lync Client was not designed to run with multiple instances. Or better said: it was designed specifically to prevent this, let's see how it does this:

On startup Lync calls an internal function called COcAppNoUI::InitializeMainInstance. In this function it creates a Mutex named "Office Communicator_" in the Global namespace. It also creates an Event in the Global namespace called "COMMUNICATOR-".

When a second instance of Lync is launched it checks if the Global Mutex exists and if it does it fires the Global Event. The Main instance has a thread that waits for this event using the WaitForMultipleObjects API.

Lync on Remko's Blog

Lync Client Password Recovery

Running multiple instances of Lync (howto)