Tips to open P7M file

Can't open the P7M file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open P7M files as well as a list of programs that support P7M files.

P7M file extension

File Name Digitally Encrypted Message
File Category Misc Files

The P7M file is supported on 2 operating systems. Depending on your operating system, you may need different software to handle the P7M files. Below is a summary of the number of programs that support and open the P7M file on each system platform.

Operating systems
  • 1
  • 1
  • 0
  • 0
  • 0
  • 0

What is P7M file?

The .P7M file is an encrypted email message with attachments. An encrypted message can be read by messages having the cryptographic key. They are usually the sender and the recipient. The e-mail is thus protected against unauthorized access. The recipient, in order to pass the message to a third party, must decrypt it. Originally, this was how vital correspondence containing vital data was secured. Currently, after the introduction of the GDPR, correspondence encryption is increasingly encountered on a daily basis.

How to open P7M file?

The most common problem when using Digitally Encrypted Message is that a specific P7M is not associated with the program. This is manifested by the fact that P7M files open in unusual applications or do not have an assigned program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the P7M file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Apple Keychain Access

In this case, you should first verify that the Apple Keychain Access application is installed on the computer. This can be achieved by typing Apple Keychain Access into the operating system search engine. If we do not have this program, it is worth installing it, as it will help you automatically associate the file P7M with Apple Keychain Access. Below you will find a list of applications that support P7M files.

Programs to open P7M file

Remember to download programs supporting P7M files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Apple Keychain Access with P7M files

However, it may happen that the application itself does not cause the P7M file to open in the Apple Keychain Access application, but you can set it manually. This option is available from the level of Properties of a specific file available in the context menu. Information about the file and the program that the file is associated with are available here. Using the "Change" button we can set the program to handle this type. It may happen that in the next window there will be no appropriate program - however, this can be corrected with the "Browse" option where you should manually indicate the program location. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the P7M file with the Apple Keychain Access application.

Step 3. Update Apple Keychain Access to the latest version

If, despite the association of the Apple Keychain Access program with the Digitally Encrypted Message file, the file still does not open, check the program version and possibly update it to the newest version.

Step 4. Check for the following problems with the P7M file

The problem may also be with the file itself if the above steps don't work. File problems can be divided into the following:

The P7M file may be unusually small compared to the original file. This is most often caused by a problem while downloading the P7M file. The file should be downloaded again, making sure that the process has finished correctly.
The operating system may be infected with a computer virus. A virus scan using an up-to-date antivirus program should fix the problem. Alternatively, you can use the scanners available online. The scan should cover the entire computer, not only the P7M file that we want to open. However, remember that not every infected P7M file can be recovered, so it is important to take care of regular backups.
A typical compatibility error - the program does not support the older version of the P7M file. These problems are known and are often very easy to fix using the software developers's website.
There can be many reasons for this. Repairing is very dependent on the file type. Some programs offer the ability to automatically repair P7M file corruption.
The program can also signal the fact of encryption. The encrypted file P7M except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. These directories are write-protected to them and it's very hard to fix this problem. Copying the P7M file to another location will fix the problem.
This can happen on a file that does not support multiple access. Some file types can only be opened in one program at a time. Closing other programs should help. Sometimes you have to wait for the session to the file P7M to close. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If nothing helps, please reset the device.