P7C File Extension

P7C file icon
PKCS #7 Certificate Format
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What is P7C file?

Full format name of files that use P7C extension is PKCS #7 Certificate Format. Files with P7C extension may be used by programs distributed for Mac OS, Windows platform. P7C file belongs to the Web Files category just like 190 other filename extensions listed in our database. Users are advised to use Microsoft Certificate Manager software for managing P7C files, although 6 other programs can also handle this type of file.

Programs which support P7C file extension

The following list contains programs grouped by 2 operating systems that support P7C files. P7C files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support P7C file

How to open file with P7C extension?

There can be multiple causes why you have problems with opening P7C files on given system. Fortunately, most common problems with P7C files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with P7C files.

Step 1. Get the Microsoft Certificate Manager

Problems with opening and working with P7C files are most probably having to do with no proper software compatible with P7C files being present on your machine. The most obvious solution is to download and install Microsoft Certificate Manager or one to the listed programs: Adobe Acrobat, Microsoft Windows, Adobe Reader. Above you will find a complete listing of programs that support P7C files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Microsoft Certificate Manager website and download the installer.

Step 2. Verify the you have the latest version of Microsoft Certificate Manager

If the problems with opening P7C files still occur even after installing Microsoft Certificate Manager, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Microsoft Certificate Manager is available. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of Microsoft Certificate Manager installed, it may not support P7C format. The latest version of Microsoft Certificate Manager should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open P7C files to Microsoft Certificate Manager

If the issue has not been solved in the previous step, you should associate P7C files with latest version of Microsoft Certificate Manager you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the P7C file
  • Select Choose another app → More apps
  • Finally select Look for another app on this PC, point to the folder where Microsoft Certificate Manager is installed, check the Always use this app to open P7C files box and conform your selection by clicking OK button

Change the default application in Mac OS

  • Right-click the P7C file and select Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • Select Microsoft Certificate Manager and click Change for all...
  • Finally, a This change will be applied to all files with P7C extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Verify that the P7C is not faulty

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the P7C file in question. Being unable to access the file can be related to various issues.

1. The P7C may be infected with malware – make sure to scan it with an antivirus tool.

If the file is infected, the malware that resides in the P7C file hinders attempts to open it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the P7C file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If the P7C file was sent to you by someone else, ask this person to resend the file to you. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with P7C extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Check if the user that you are logged as has administrative privileges.

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Microsoft Certificate Manager

If the systems has insufficient resources to open P7C files, try closing all currently running applications and try again.

5. Ensure that you have the latest drivers and system updates and patches installed

Latest versions of programs and drivers may help you solve problems with PKCS #7 Certificate Format files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with P7C files affecting older versions of given software.

Do you want to help?

If you have additional information about the P7C file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on P7C file.

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