Set windows 10 certificate import wizard as default when opening files

I used nexus personal as default to open .p12 files. I want to reverse this and open this filetype with the certificate import wizard. This is the default option when opening (doubleclicking) a certificate: A new window appears and you chose where to install it. But I can't chose mmc or the certificate import wizard as default program to open .p12 files with. I can start mmc manually and import the certificate, but that's not an option to work with for our clients.

Does anybody know how this works?

Solution 1:

1. File Properties → Opens with: → Change...
2. More Apps → Look for another app on this PC
3. File name: → Change Programs to All Files
4. Select: C:\Windows\System32\cryptext.dll

Merging the following into the Registry will auto-recognize .pem extensions as certs:

• CLI:

  Reg Add "HKCR\.pem" /t REG_SZ /d "CERFile"
  Reg Add "HKCR\.pem" /v "Content Type" /t REG_SZ /d "application/x-x509-ca-cert"
  

  
  
• PEM-Association.reg:

  Windows Registry Editor Version 5.00
  
  [HKEY_CLASSES_ROOT\.pem]
  @="CERFile"
  "Content Type"="application/x-x509-ca-cert"