Article ID: 116035, created on Apr 30, 2013, last review on Jul 23, 2014

  • Applies to:
  • Operations Automation

Symptoms


Lync user receives HTTP 404 error trying to open meeting URL.

Cause


Rewrite rules are configured incorrectly on the 'Lync Server External Web Site' in IIS on Front End/Director servers: only rewrite rules for the base meeting URL specified by the ‘Conferencing domain name’ setting in the Application Global Settings should be present:



Resolution


Check whether the (Get-CsSimpleUrlConfiguration).UseBackendDatabase property is set to ‘True’, run the PowerShell cmdlet, it should return 'True': PS C:\> (Get-CsSimpleUrlConfiguration).UseBackendDatabase
True

If the property is not set to 'True' correct it: Set-CsSimpleUrlConfiguration -UseBackendDatabase $true
Check whether the InternalDomains/AllowAllDomains is set to ‘true’ in the topology file:

  • Generate and save Lync topology .tbxml file using Topology Builder
  • Open the generated XML file and check the InternalDomains/AllowAllDomains parameter:



  • If the InternalDomains/AllowAllDomains parameter is not set to 'true' correct it in Lync topology using one of the ways below:
  1.  Use Topology Builder
  2. Execute the following script in the PowerShell
$topology = [xml](Get-CsTopology -AsXml)
$topology.DocumentElement.InternalDomains.AllowAllDomains = 'true‘
Publish-CsTopology -Document ([System.Xml.Linq.XElement]::Parse($topology.OuterXml))
  • Run the Enable-CsComputer PowerShell cmdlet on each FrontEnd and Director server.

 

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