Use Database Administration to upgrade the missing company database.

1. Open Database Administration for Sage 100 Contractor.
2. Click Upgrade Company Database.
3. Verify the Company box is checkable before selecting the company.
   
   NOTE:

   A grayed out Company box means the company doesn't need an upgrade.

    
4. Uncheck any companies you don't want to upgrade now.
5. Click Upgrade Databases.
6. Close Sage 100 Contractor after the upgrade completes.
7. Reopen Sage 100 Contractor.
8. Verify the company appears in the Company List.