Symptoms
Consider the following scenario:
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In Microsoft Lync Server 2013, you define some address book normalization rules in the Company_Phone_Number_Normalization_Rules.txt file.
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You run the following Lync cmdlet:
Set-CsAddressBookConfiguration -UseNormalizationRules=$true -IgnoreGenericRules=$true
In this scenario, the Rtcsrv.exe process crashes.
Cause
This issue occurs because the Lync 2013 Front-End service cannot handle invalid normalization rules.
Resolution
To resolve this issue, install the February 2015 Cumulative Update for Lync Server 2013 (Front End Server and Edge Server).
