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Details of the .pkcs file extension

The table below provides useful information about the .pkcs file extension. It answers questions such as:

  • What is the .pkcs file?
  • What program do I need to open a .pkcs file?
  • How can the .pkcs file be opened, edited or printed?
  • Where can I find the specifications for .pkcs?
  • Which MIME-type is associated with the .pkcs extension?
  • How can I convert .pkcs files to another format?
  • What are other, similar filename extensions to .pkcs?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.pkcs file extension details


PKCS File .pkcs file icon
PKCS is a Public-Key Cryptography Standards file.
Category: Other files
Application: -
Mime-type: application/x-pkcs
Magic number: -
Magic string: -
Sample: -
PKCS aliases:
PKCS related links:
PKCS related extensions:
Certificate File

Key Database File

PKCS #12 Data File

Certificate Revocation List

PKCS #7 Encrypted Message

Microsoft Serialized Certificate Store

PKCS7 Signature

PGP Security Signature/Key

GnuPG Signature/Key

Java Key Store

Other types of files may also use the .pkcs file extension.

.pkcs file extension error

The .pkcs file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

pkc, kcs, pcs, pks

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Jython JAR Cache
Keep and Share Offline Calendar Data
KDevelop Persistent Code Store
CYANA Pseudocontact Shift Restraint File
Oracle Package Specification
open .pkcs file

Can't open a .pkcs file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .pkcs file association, check the FAQ.

.pkcs file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .pkcs file extension, write to us!

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