Office 365 interoperability with ProxySG and ASG

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When working with Office 365 applications and technologies in conjunction with the ProxySG or Advanced Secure Gateway (ASG) products, the Office 365 Web Guide is the primary source of best practices, supported releases, configuration information, and known issues.  This article provides links to additional support knowledge base articles for topics or issues not currently covered in the Web Guide.
With the introduction of MS-TURN and SIP protocol detection along with CRL distribution points certificate extension support required for Skype for Business operation there are no known issues with processing full SSL interception for all Office 365 applications and traffic.  The only known issues are regarding authentication support for some Office 365 applications and performance considerations when processing Office 365 traffic in general.  More details can be found in the Office 365 Web Guide.
Minimum release recommendations for Office 365 traffic processing:
ProxySG: (6.6.x TBD)
*Note: or are no longer the recommended release. and later 6.5 releases contain important fixes for Office 365 support.  See the Office 365 Web Guide for additional details.
Advanced Secure Gateway (ASG): TBD
The following are a list of additional Office 365 related knowledge base articles with information not currently covered in the Web Guide:
Microsoft Lync fails to show your contacts display images when authentication is enabled
Outlook is very slow while connecting to office 365 exchange in explicit deployment
Prompt for Credentials When Accessing FQDN Sites From a Windows Vista or Windows 7 Computer (example SharePoint via explorer view)
Cannot activate Microsoft Visio 2013 when going through ProxySG appliance
What resides in the Web Security Service (ThreatPulse) SAML bypass list?
While trying to load Microsoft Office help files from any Office Application you receive the error: Request Error (invalid_request)
[WSS] With IPSec connection, can Skype work with the cloud service?
Cloud service intercepts Office 365 e-mail traffic on port 443 regardless of SSL interception feature status.
What are the Microsoft Office 365 URLs and IP address ranges?
Security alert popup for Autodiscover certificate when Outlook connecting to Office 365 hosted email account
Microsoft SharePoint Server and Authentication modes on the Proxy SG

The ProxySG or Advanced Secure Gateway appliance prompts Microsoft Lync for authentication challenge
Skype for Business is unable to login or connect to a meeting when going through a ProxySG or Advanced Secure Gateway
Audio, video and/or desktop sharing is not working on Skype for Business when going through a ProxySG or Advanced Secure Gateway
Additional Information
Bug Number
InQuira Doc Id

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First Published      12/21/2016
Last Modified      03/21/2017
Last Published      03/21/2017
Article Audience
Product      Advanced Secure Gateway, ProxySG
Software      SGOS 6.5, SGOS 6.6
Article Number      000032595
Summary      This article includes information and recommendations for Office 365 interoperability with the ProxySG and ASG products.
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