You can select any of the above options. If you want to open the file, click Open. As explained above, this is not an error message. It is a warning message which can ...
Click the standard toolbar and select Customize Ribbon. An Outlook Options dialog box will open. In the Choose the commands list box, click the drop-down arrow and select All Commands. Now, look for ...
Several Outlook users, on different forums, have reported encountering the error “OST file cannot be opened,” when trying to open the application or sending ...
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