Certificate handling. If you want to export a PFX file from a .CRT, .CER or .P7B file, follow these steps:
1. Install Windows 10 SDK (https://developer.microsoft.com/sv-se/windows/downloads/windows-10-sdk).
2. Navigate to folder: C:\Program Files (x86)\Windows Kits\10\bin\10.0.16299.0\x64.
3. Start “certmgr.exe”.
4. In the window that opens you will se a list of all the certificates that are installed. Select the certificate you want export. The click on the button “Export”.
5. Follow the Export Wizard. You will now be able to select export as a PFX file.