Q:The program does not work. What am I doing wrong? I'm trying to recover a file. When I select "Save as PST file", it tries to make a copy of the original file, but when it is done, it displays the following error message: Invalid class string or Outlook application needs to be installed on the computer.


Make sure you close Outlook before you start Outlook Recovery Kit. Try to download the newer version of our software and install it.

In some cases, you have to reinstall Microsoft Outlook and Outlook Recovery Kit because some components that are in use must be updated, but they cannot be released without reinstallation. Try to recover your data to separate files, it may help. Make sure you have enough free space on your storage drive to save recovered data. Do not try to save the file with results under the same name as that of the damaged file.

Try to recover data again.