Installing IIS Role Services for Lync Server 2013

Update 3/17/13 – Added information about .NET 3.5 installation error on Windows Server 2012.Update 9/19/12 – Added HTTP Activation for Windows Server 2012.Update 7/20/12 – Added Dynamic Content Compression and additional information for Windows Server 2012. The following IIS role services must be installed before attempting to install this product: Web Server Common HTTP Features Static…

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Issues with MRAS and Limited External Calling

This week I ran into two interesting issues, both around MRAS and the clients displaying Limited External Calling.  So what is MRAS anyway?  MRAS (Media Relay Authentication Service) is a service on the Edge Server that is responsible for providing credentials to clients in order for them to be able to request ports and establish…

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How to Update Windows Firewall Rules for Lync Server 2010 After Installation

I had a question from a customer the other day about how to add the firewall rules for Lync Server 2010 to the Windows Firewall after installation.  Unlike in the OCS days, adding the firewall rules back to the Windows Firewall is rather simple.  This issue comes up because in some environments the Windows Firewall is…


Fun with .NET Regular Expression

I got asked an interesting question by a colleague the other day…What is the best way to normalize a 5 digit range, i.e. 53574-53899?  The question seems easy enough, but in reality it’s slightly harder than you would think.  Most people think that this will do the trick: ^([53574-53899])$ But, as you can see, this doesn’t actually…