Yes, when Outlook won't open, the manual method above doesn't help, but you can find many third-party applications to convert your OST files to PDF format. I suggest using an application called TrustVare OST to PDF Converter for converting multiple OST files into PDF format without losing any of your data. With this tool, users can select the data that they want to convert (i.e., convert only what they need) instead of having to waste time converting the whole contents of their OST files. This is made easy by the simplicity of the interface and through the availability of a demo version, both of which are very helpful to novice users.
