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_LOCAL_MACHINE
Registry Path	software\policies\microsoft\office\16.0\lync
Value Name	enablesiphighsecuritymode
Value Type	REG_DWORD
Enabled Value	1
Disabled Value	0

lync16.admx

Administrative Templates (Computers)

Microsoft Office 2016 (Machine)
Microsoft PowerPoint 2016 (Machine)
- Converters
  - Turn on an external converter as the default for a file extension
Skype for Business 2016
- Microsoft Lync Feature Policies

Administrative Templates (Users)

Microsoft Access 2016
- Application Settings
- Customizable Error Messages
  - List of error messages to customize
- Disable Items in User Interface
  - Custom
    - Disable commands
    - Disable shortcut keys
  - Predefined
    - Disable commands
    - Disable shortcut keys
- Miscellaneous
- Tools | Security
  - Workgroup Administrator...
    - Path to shared Workgroup information file for secured MDB files
  - Modal Trust Decision Only
Microsoft Excel 2016
Microsoft Office 2016
Microsoft OneNote 2016
- OneNote Options
Microsoft Outlook 2016
Microsoft PowerPoint 2016
Microsoft Project 2016
- Miscellaneous
- Project Options
  - Calculation
    - Calculation options for 'Project1'
    - Calculation options for Microsoft Project
      - Automatic Calculation
      - Calculate all open projects
  - Calendar
  - Customize Ribbon
    - Display Developer tab in the Ribbon
  - Edit
    - Edit options for Microsoft Project
    - Hyperlink appearance in 'Project1'
    - View options for time units in 'Project1'
      - Add space before label
      - Days
      - Hours
      - Minutes
      - Months
      - Weeks
      - Years
  - General
    - General options for 'Project1'
    - General options for Microsoft Project
    - Undo Levels
  - Interface
    - Project Guide settings for 'Project1'
      - Project Guide Content
      - Project Guide Functionality and Layout page
    - Project Guide settings
      - Display Project Guide
    - Show indicators and Option butons for
    - Disable Internal ID Matching
  - Save
    - Auto Save Options
    - File locations
      - Projects
      - User Templates
    - Tools | Local Project Cache
      - Local Project Cache Location
      - Local Project Cache Size Limit in MB
    - Save Microsoft Project files as
  - Schedule
    - Schedule options for Microsoft Project
      - Show assignment units as
      - Show scheduling messages
    - Scheduling options for 'Project1'
  - Security
  - View
    - Calendar Type
      - Calendar Type
    - Show
    - Date Format
    - Default Project Currency
    - Default View
    - Project Summary Task
Microsoft Publisher 2016
Microsoft Teams
- Prevent Microsoft Teams from starting automatically after installation
- Restrict sign in to Teams to accounts in specific tenants
Microsoft Visio 2016
- Customizable Error Messages
  - List of error messages to customize
- Disable Items in User Interface
  - Custom
    - Disable commands
    - Disable shortcut keys
  - Predefined
    - Disable commands
- Miscellaneous
- Visio Options
  - Advanced
  - Customize Ribbon
    - Display Developer tab in the Ribbon
  - General
    - User Interface Options
  - Proofing
    - AutoCorrect Options
  - Save
    - Offline Editing
      - Save checked-out files to
    - Save Documents
      - Prompt for document properties on first save
      - Save Visio files as
    - Turn off CAD/DWG functionality
  - Security
    - Macro Security
      - Enable Microsoft Visual Basic for Applications project creation
      - Load Microsoft Visual Basic for Applications projects from text
    - Trust Center
Microsoft Word 2016
Skype for Business 2016
- Microsoft Lync Feature Policies