The most common cause for this issue is Windows Security blocking the opening of the file due to the file having come from another computer (especially if the file has come from the internet).
In this case, the issue can be resolved by following the below steps:
- Right-click the RDB file.
- Click Properties...
- On the 'General' tab, check the "Unblock" box and click Apply.
- Restart Act! and try to restore the file again.
Other CausesThis issue can also occur when you are attempting to unpack and restore a Remote database if you do not select a Remote database (.RDB) file to restore in the Unpack and Restore Remote Database dialog box.
After reaching the Unpack and Restore Remote Database dialog box, if you click OK without clicking the Browse button and opening a (.RDB) Remote database file. You will receive the following Missing Entries message.
Click OK, and the following ACT! message appears.
If you receive this message and the Select the remote database file to restore field is populated correctly, it is likely that your Remote database was damaged while being created or transferred.
You may be able to resolve the issue by re-creating the Remote database. It is recommended that you close all applications that may be running in the background (Including AntiVirus Software if possible) while creating and transferring the Remote database.