Why Microsoft push notification messages are not delivered to Lync Mobile Clients.

Taken from Microsoft KB2664650

Microsoft push notification messages are not delivered to Lync mobile IOS and WP7 clients, when URL filtering is configured on Lync 2010 Edge Servers or office communication 2007 R2 Access Edge Server, apparently this is caused by:

Taken from Microsoft KB2664650

The Lync Server 2010 Mobility service sends SIP messages that contain active hyperlinks in their Message-Body header that define the XML namespace information for the push notification to the Lync Server Push Notification service.

Lync Server 2010 Front End Pool

Using the URL Filter page in the IM and Presence group in Lync Server Control Panel to enable the Hyperlink prefix option Send warning message, will precede the active hyperlink with a user defined warning message in the SIP packet that contains the push notification message. The Lync Server Push Notification service will reject the modified push notification information and send an error response back to the Lync Server 2010 Mobility service.

Office Communications Server 2007 R2 Access Edge server

Using the URL Filter tab of the Office Communications Server 2007 R2 Intelligent IM Filter dialog to:

o Allow instant messages that contain hyperlinks, but convert the hyperlinks to plain text

o Allow instant messages that contain hyperlinks. Enter a warning that you want to insert at the beginning of each containing hyperlinks

Will precede the active hyperlink with a user defined warning message and convert the active hyperlink to text by preceding it with an underscore or precede the active hyperlink with a user defined warning message in the SIP packet that contains the push notification message. The Lync Server Push Notification service will reject the modified push notification information and send an error response back to the Lync Server 2010 Mobility service.

for more information about the workaround and how to fix this issue please click here

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