OS installed office2003 and office2007 at the same time, open word2003 from “start” menu, double click word2007 encrypted, close it after the operation, document encrypted cannot be open when opening word2007 encrypted again.
Scheme 1: Judge all the version after the SPC005 program version. Judge all the office version that published by Microsoft when installing office2003 and office2007 at the same time.
Scheme 2: uninstall office2003. Open word2007 document that in clear text mode again, then open encrypted document again.
This problem appears in SPC004 and before version. The guid was written fixed in the program what results in office2007 of different versions cannot apply for new register. Read office2007 guid in registry, apply for new register.