Due to an issue, the Exchange team at Microsoft recently warned against installing a .NET update. Additionally, they provided steps to safely remove a .NET update and revert back to a known-good version. But, they also provided a nifty way to block future .NET Framework updates from automatically installing.
Here are the steps:
- Back up the registry.
- Start Registry Editor. To do this, click Start, type regedit in the Start Search box, and then press Enter.
- Locate and click the following subkey: HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP
- After you select this subkey, point to New on the Edit menu, and then click Key.
- Type WU, and then press Enter.
Right-click WU, point to New, and then click DWORD Value.
- Type BlockNetFramework47, and then press Enter.
- Right-click BlockNetFramework47, and then click Modify.
- In the Value data box, type 1, and then click OK.
- On the File menu, click Exit to exit Registry Editor.
Update: Microsoft now has a KB article created with these steps: KB4024204