ERROR: Microsoft Lync 2010 must be installed by running the appropriate Lync setup executable

Issue:

You experience the following symptoms:

• A local Windows Installer (MSI) installation for Microsoft Lync 2010 can fail, and the following warning is displayed in the Microsoft Lync 2010 Setup dialog box:Microsoft Lync 2010 must be installed by running the appropriate Lync setup executable


Resolution:

Use the Lync 2010 UseMSIForLyncInstallation Group Policy setting to enable or block MSI deployments for Lync.msi as follows:

Name: UseMSIForLyncInstallation

Default: 0

Range: 1 or 0

Registry Location:HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator

To do this, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.

2. Locate and then click the following registry subkey HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator

3. On the Edit menu, point to New, and then click DWORD Value.

4. Type UseMSIForLyncInstallation, and then press ENTER to name the registry entry.

5. Right-click UseMSIForLyncInstallation, and then click Modify.

6. In the Value data box, type 1 if that value is not already displayed, and then click OK.

7. Exit Registry Editor.

8. Restart the Windows client.

Source:

http://support.microsoft.com/kb/2477965