Microsoft Word Error - "Word could not create the work file. check the temp environment variable"

The follow registry edit seems to be a fix for the error: 

Word could not create the work file. check the temp environment variable

Steps: 

Open regedit.
browse to HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\

Backup the CLSID

Delete keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00020827-0000-0000-C000-000000000046}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{65235197-874B-4A07-BDC5-E65EA825B718}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{84F66100-FF7C-4fb4-B0C0-02CD7FB668FE}

Reboot.
Test.

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