written by jgstew
From opening the MSI in ORCA, the MS Fix effects 2003, 2007, and 2010 (Both x32 and x64 versions of 2010)
What it really does is write the following to the registry:
ADDKEY1 1 Software\Microsoft\Office\11.0\Word\Security\FileOpenBlock RtfFiles #1 C_ADDKEY1
ADDKEY2 1 Software\Policies\Microsoft\Office\12.0\Word\Security\FileOpenBlock RtfFiles #1 C_ADDKEY2
ADDKEY3 1 Software\Microsoft\Office\14.0\Word\Security\FileBlock RtfFiles #2 C_ADDKEY3
ADDKEY4 1 Software\Microsoft\Office\14.0\Word\Security\FileBlock OpenInProtectedView #0 C_ADDKEY4
ADDKEY5 1 Software\Microsoft\Office\15.0\Word\Security\FileBlock RtfFiles #2 C_ADDKEY5
ADDKEY6 1 Software\Microsoft\Office\15.0\Word\Security\FileBlock OpenInProtectedView #0 C_ADDKEY6
K64_ADDKEY1 1 Software\Microsoft\Office\11.0\Word\Security\FileOpenBlock RtfFiles #1 C_K64_ADDKEY1
K64_ADDKEY2 1 Software\Policies\Microsoft\Office\12.0\Word\Security\FileOpenBlock RtfFiles #1 C_K64_ADDKEY2
K64_ADDKEY3 1 Software\Microsoft\Office\14.0\Word\Security\FileBlock RtfFiles #2 C_K64_ADDKEY3
K64_ADDKEY4 1 Software\Microsoft\Office\14.0\Word\Security\FileBlock OpenInProtectedView #0 C_K64_ADDKEY4
K64_ADDKEY5 1 Software\Microsoft\Office\15.0\Word\Security\FileBlock RtfFiles #2 C_K64_ADDKEY5
K64_ADDKEY6 1 Software\Microsoft\Office\15.0\Word\Security\FileBlock OpenInProtectedView #0 C_K64_ADDKEY6
See the attached screenshot for more clarity on the above.
I’m guessing this could be implemented using a combo of regset and regset64, and it could be done in a way that is more specific to the version of MS office installed. I’m fairly certain that these settings would take effect system wide if written to HKLM instead of HKCU, but not 100% sure.