Disable .NET Framework 4.7 from Windows Update


Microsoft posted a blog about .NET 4.7 with Exchange is not supported yet.  (link)

About the .NET Framework 4.7

The .NET Framework 4.7 is an in-place upgrade to versions 4, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, and 4.6.2 of the .NET Framework.
In case of Exchange we will need to block the automatic installation through Windows Update of the .NET Framework 4.7 patch.

These steps describes how to perform this blocking action.

How to disable update .NET 4.7 from Windows Update in Server 2016

  1. Back up the registry.
  2. Start Registry Editor. To do this, click Start, type regedit in the Start Search box, and then press Enter.
  3. Locate and click the following subkey:
     HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP
  4. After you select this subkey, point to New on the Edit menu, and then click Key.
  5. Type WU, and then press Enter.
  6. Right-click WU, point to New, and then click DWORD Value.
  7. Type BlockNetFramework47, and then press Enter.
  8. Right-click BlockNetFramework47, and then click Modify.
  9. In the Value data box, type 1, and then click OK.
  10. On the File menu, click Exit to exit Registry Editor.

registry editor

Disable via Powershell

Thanks to Pat Richard for noticing the Powershell line!

New-Item -Path 'HKLM:\Software\Microsoft\NET Framework Setup\NDP\WU' -force
New-ItemProperty -Path 'HKLM:\Software\Microsoft\NET Framework Setup\NDP\WU' -Name BlockNetFramework47 -Value 1 -PropertyType 'DWord' -Force

Polycom Trio 8800 failed to discover exchange server (Office365)

Polycom Realpresence Trio

Deployed some Polycom Trio’s in my organisation (we’re running Exchange Online and Skype for Business Online) and everytime i went to the Calendar the Polycom was showing an error “Failed to discover exchange server”.

How to solve this error

Login to the webinterface from the Polycom Trio 8800 (first time enable HTTP/HTTPS connection from the Polycom Advanced Option, Default password is “456”)

Go to Settings > Applications

Disable the AutoDiscover and Fill in the following Exchange Server url:


Save configuration and restart your Polycom device.