Symptoms
You use Outlook Web App (OWA) in Internet Explorer, and you click a URL that is contained in an email message. If the URL is very long, the webpage does not open. An example of a very long URL is a URL for a Yammer webpage.
This issue affects email messages that are located on servers that are running Microsoft Exchange Server 2007, Microsoft Exchange Server 2010, or Microsoft Exchange Server 2013.
Cause
This issue occurs because the secure signed URL filtering in OWA exceeds the supported maximum URL length in Internet Explorer.
Resolution
To fix this issue, install one of the following update packages:
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Cumulative Update 11 for Exchange Server 2013
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Update Rollup 12 for Exchange Server 2010 Service Pack 3
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Update Rollup 18 for Exchange Server 2007 Service Pack 3
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
