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Consider the following scenario:

  • In Microsoft Lync Server 2013, you define some address book normalization rules in the Company_Phone_Number_Normalization_Rules.txt file.

  • You run the following Lync cmdlet:

    Set-CsAddressBookConfiguration -UseNormalizationRules=$true -IgnoreGenericRules=$true

In this scenario, the Rtcsrv.exe process crashes.


This issue occurs because the Lync 2013 Front-End service cannot handle invalid normalization rules.


To resolve this issue, install the February 2015 Cumulative Update for Lync Server 2013 (Front End Server and Edge Server).

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