The above error code 30068-4 (1084) primarily appears when you try to open Office program on a Windows 10 computers which are previously running on Windows 8.1. It has been observed that this error needs to repair or a reinstall and you can read the below information for more knowledge.
Disclaimers: Fixing an error on Office program deals with your documents, emails, spreadsheets, and presentations. Please backup your data before you proceed. If you are not sure about the procedure, contact the technician for the support.