When I start the reparation, I get the error message "Either there is no default mail client or the current mail client cannot fulfill the messaging request. Please run Microsoft Office Outlook and set it as the default mail client." and DataNumen Outlook Repair quits at once. How to solve this issue?

DataNumen Outlook Repair requires 32bit MAPI to be installed and set properly on the computer.

To solve this issue, please:
      1. Install 32bit Microsoft Outlook on your computer if it has not be installed yet.
      2. Set Outlook as the default e-mail client on the computer. To do this, follow these steps:
          2.1   Start Microsoft Internet Explorer.
          2.2   On the Tools menu, click Internet Options.
          2.3   Click the Programs tab.
          2.4   In the E-mail box, click Microsoft Outlook .
          2.5   Click OK to close the Internet Options dialog box.
      3. Restart DataNumen Outlook Repair to repair your PST files.

If you do not have 32bit Outlook, or you only have 64bit Outlook installed, then you can install the free 32bit MAPI package to solve the problem, as follows:
      1. Download the free MAPI package at https://www.microsoft.com/en-us/download/details.aspx?id=39045
      2.  Follow the instructions on the download page to install 32bit MAPI package on your computer
      3.  Restart DataNumen Outlook Repair to repair your PST files.

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