Convert certificate from p7c to cer

Question

how to convert a certificate from .p7c to .cer extension?

Thanks

Answer 1

I know this is a very old question.

But on Windows 10 or Windows Server 2012 R2, if you double click on a .p7c file, Windows will try to open p7c file with wab.exe (Windows Contact), which is wrong.

What I had to do was rename the p7c file into p7b, only then it will be recognized as a certificate file.

Then I can double click on it and Windows will open it with certmgr, as shown below and export it to Base64 .cer file :

Answer 2

Ok, we find the solution (on windows xp): double click the file >> click copy on file >> save the file in cer format.