Back up the registry.
Start Registry Editor. To do this, click Start, click Run, type regedit,
and then click OK.
Locate and then click to select the following registry sub key:
HKEY_LOCAL_MACHINE\Software\Microsoft\NET Framework Setup\NDP
After you select the subkey that is specified in step 3, 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 BlockNetFramework451, and then press ENTER.
......
阅读全文