It worked for me just persisting with the issue constantly.
DO THIS:
1: Keep running the below file as admin before opening office.
2: Keep doing this and the problem should go away after time.
This is file:
reg add HKCU\Software\Microsoft\Office\11.0\Word\Options /v NoReReg /t REG_DWORD /d 1
reg add HKCU\Software\Microsoft\Office\12.0\Word\Options /v NoReReg /t REG_DWORD /d 1
reg add HKCU\Software\Microsoft\Office\13.0\Word\Options /v NoReReg /t REG_DWORD /d 1
reg add HKCU\Software\Microsoft\Office\14.0\Word\Options /v NoReReg /t REG_DWORD /d 1
reg add HKCU\Software\Microsoft\Office\15.0\Word\Options /v NoReReg /t REG_DWORD /d 1
(Exact file text)
(Run as admin and as normal a few times and enter yes before each office open)
Hope this helps.
NOTE: Write this in notepad and save it as a .bat file.