.Net Framework 3.5 SP1 on Windows 7 not recognized by installers

.Net Framework 3.5 SP1 on Windows 7 not recognized by installers Windows 7 Ultimate RTM already comes with the .Net Framework 3.5 SP1 preinstalled. However, some installers like the Azure tools and SDK 1.1 seem to check for it and fail:
Asked by: Guest \| Views: 339

Total answers/comments: 1

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Guest [Entry]

"As described here:

The promlem has been fixed after
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET
Framework Setup\NDP\v3.5\SP was set to
1.

More info here too (linked in the page above):

Also could you check the following two
registry keys and let me know what the
values are?

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\NET Framework Setup\NDP\v3.5\SP

And

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5\SP

To get pass the install error, if the
value of the registry is 0, set it to
1."