Configure SIP security mode

When Lync connects to the server, it supports various authentication mechanisms. This policy allows the user to specify whether Digest and Basic authentication are supported.

Disabled (default): NTLM/Kerberos/TLS-DSK/Digest/Basic
Enabled:
Authentication mechanisms: NTLM/Kerberos/TLS-DSK
Gal Download: Requires HTTPS if user is not logged in as an internal user.

Supported on: At least Windows 7

Registry Hive	HKEY_CURRENT_USER
Registry Path	software\policies\microsoft\office\15.0\lync
Value Name	enablesiphighsecuritymode
Value Type	REG_DWORD
Enabled Value	1
Disabled Value	0

lync15.admx

Administrative Templates (Computers)

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- Security
Microsoft Lync 2013
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Microsoft Office 2013 (Machine)
Microsoft PowerPoint 2013 (Machine)
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Administrative Templates (Users)

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Microsoft InfoPath 2013
Microsoft Lync 2013
- Microsoft Lync Feature Policies
Microsoft Office 2013
Microsoft OneNote 2013
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Microsoft PowerPoint 2013
Microsoft Project 2013
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Microsoft Publisher 2013
Microsoft SharePoint Designer 2013
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- Downloading Framework Components
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Microsoft Visio 2013
- Customizable Error Messages
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- Disable Items in User Interface
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Microsoft Word 2013