Previous-version file formats

Allows you manage whether users can open or save files in Project with file formats from previous versions or file formats that are not default. By default, users can not open or save files with formats from previous versions.

0. Do not open or save
   

   Registry Hive	HKEY_CURRENT_USER
   Registry Path	software\policies\microsoft\office\16.0\ms project\security
   Value Name	legacyfiles
   Value Type	REG_DWORD
   Value	0

1. Prompt when opening and saving
   

   Registry Hive	HKEY_CURRENT_USER
   Registry Path	software\policies\microsoft\office\16.0\ms project\security
   Value Name	legacyfiles
   Value Type	REG_DWORD
   Value	1

2. Allow opening and saving
   

   Registry Hive	HKEY_CURRENT_USER
   Registry Path	software\policies\microsoft\office\16.0\ms project\security
   Value Name	legacyfiles
   Value Type	REG_DWORD
   Value	2