"Cannot sign in to Lync" error message when you sign in to Lync Online

Symptoms

When you try to sign in to Microsoft Lync Online, you receive the following error message:

The server cannot be reached to validate your password. Make sure your computer is connected to the Internet. If the problem continues, please contact your support team. 

Cause

This issue may occur because a proxy firewall blocks HTTP port 80. Therefore, Microsoft Online Identity service (Msoidsvc) cannot connect to the Microsoft Online Live ID service to validate the authentication.

Note Lync Online accesses the Internet on HTTP port 80 during the sign in process.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Workaround

To work around this issue, use one of the following methods:
  • Unblock port 80 outgoing on the network edge or proxy edge.
  • Manually configure the WinHTTP proxy by using a valid proxy setting.


Rekvizīti

Raksta ID: 2531067. Pēdējo reizi pārskatīts: 2012. gada 27. marts. Pārskatījums: 1

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