IIS Requirements for Front End Pools and Standard Edition Servers


Topic Last Modified: 2012-10-18

For Standard Edition servers and Front End Servers, and Directors, the Microsoft Lync Server 2010 installer creates virtual directories in Internet Information Services (IIS) for the following purposes:

  • To enable users to download files from the Address Book Service

  • To enable clients to obtain updates (for example, Microsoft Lync 2010)

  • To enable conferencing

  • To enable users to download meeting content

  • To enable unified communications (UC) devices to connect to Device Update Web service and obtain updates (for details, see Updating Devices in the Planning documentation)

  • To enable users to expand distribution groups

  • To enable phone conferencing

  • To enable response group features

In addition, the cumulative update for Lync Server 2010: November 2011 installer creates virtual directories in IIS for the following purposes:

  • On Front End Servers or Standard Edition servers to support mobility functionality, such as instant messaging (IM) and presence, on mobile devices

  • On Front End Servers or Standard Edition servers and on Directors to enable mobile devices to automatically discover mobility resources


If you are deploying mobility, we recommend that you use IIS 7.5. The Microsoft Lync Server 2010 Mobility Service installer sets some ASP.NET flags to improve performance. IIS 7.5 is installed by default on Windows Server 2008 R2, and the Mobility Service installer automatically changes the ASP.NET settings. If you use IIS 7.0 on Windows Server 2008, you need to manually change these settings. For details, see Installing the Mobility and Autodiscover Services.

Lync Server 2010 requires the following IIS modules to be installed:


If your organization requires that you locate IIS and all Web Services on a drive other than the system drive, you can change the installation location path for the Lync Server files in the Setup dialog box. If you install the Setup files to this path, including OCSCore.msi, the rest of the Lync Server 2010 files will be deployed to this drive as well. For details about how to relocate the INETPUB deployed by Windows Server Manager when installing IIS, see http://go.microsoft.com/fwlink/p/?LinkId=216888.

  • Static Content

  • Default Document

  • HTTP Errors


  • .NET Extensibility

  • Internet Server API (ISAPI) Extensions

  • ISAPI Filters

  • HTTP Logging

  • Logging Tools

  • Tracing

  • Windows Authentication

  • Request Filtering

  • Static Content Compression

  • Dynamic Content Compression

  • IIS Management Console

  • IIS Management Scripts and Tools

  • Anonymous Authentication (installed by default when IIS is installed)

  • Client Certificate Mapping Authentication

The following table lists the URIs for the virtual directories for internal access and the file system resources to which they refer.

Virtual Directories for Internal Access

Feature Virtual directory URI Refers to

Address Book Server

https://<Internal FQDN>/ABS/int/Handler

Location of Address Book Server download files for internal users.

Autodiscover Service

https://<Internal FQDN>/Autodiscover

Location of the Microsoft Lync Server 2010 Autodiscover Service that locates mobility resources for internal mobile device users.

Client updates

http://<Internal FQDN>/AutoUpdate/Int

Location of update files for internal computer-based clients.


http://<Internal FQDN>/Conf/Int

Location of conferencing resources for internal users.

Device updates

http://<Internal FQDN>/DeviceUpdateFiles_Int

Location of unified communications (UC) device update files for internal UC devices.


http://<Internal FQDN>/etc/place/null

Location of meeting content for internal users.

Mobility Service

https://<Internal FQDN>/Mcx

Location of Mobility Service resources for internal mobile device users.

Group Expansion and Address Book Web Query service

http://<Internal FQDN>/GroupExpansion/int/service.asmx

Location of the Web service that enables group expansion for internal users. Also, the location of the Address Book Web Query service that provides global address list information to internal Microsoft Lync 2010 Mobile clients.

Phone Conferencing

http://<Internal FQDN>/PhoneConferencing/Int

Location of phone conferencing data for internal users.

Device updates

http://<Internal FQDN>/RequestHandler

Location of the Device Update Web service Request Handler that enables internal UC devices to upload logs and check for updates.

Response Group application

http://<Internal FQDN>/RgsConfig

http://<Internal FQDN>/RgsClients

Location of Response Group Configuration Tool.


For Front End pools in a consolidated configuration, you must deploy IIS before you can add servers to the pool.

securitySecurity Note:
You must use the IIS administrative snap-in to assign the certificate used by the IIS web component server.