1 Solution For All Your P7S File Issues

"How do I open P7S files if I don't have PKCS #7 Signature software?" is one of the most popular questions we receive regarding P7S files. People spend hours searching for solutions to the most common issues they have when trying to open P7S files, often with no success. Congratulations, you've found the solution!

Why Do I Need PKCS #7 Signature to Open P7S Files?


PKCS #7 Signature is the main software used to open P7S files in binary format, but it's not the only one.

If you do not want this primary software, consider buying the native software if you frequently have to open and work in P7S files. Of course, you may not want to spend a lot of money to occasionally open a single file extension. You can always look for free software to open your P7S files, but please be careful to avoid downloads that is tainted with malware. It may not be that easy to spot, so run any download through a malware and virus checker.


It's not uncommon to receive error messages when you try to open P7S files. The file may be corrupt, in which case you will have to re-download a new copy.

Problems with P7S File Associations

File associations errors are also common and easy to fix. Simply choose the right software with which you open your file (PKCS #7 Signature). You may have to get in touch with the relevant software developer if you still experience error codes. See our chart below for a list of associated software programs and their developers:

Software Developer
PKCS #7 Signature Unknown

File Woman

How to View P7S And Hundreds of Other File Extensions

The quickest, easiest, and most affordable solution to view P7S and hundreds of other file types - within a matter of clicks - is to download a universal file viewer such as File Magic (download).

A universal file viewer allows you to view files even if you don't have the associated software installed, depending on the format of the file. This means that you should be able to view P7S files even if you don't have PKCS #7 Signature software installed on your computer. Download File Magic now to experience this revolutionary software for yourself!

Download Universal File Viewer (File Magic)