File extension P7Z
| File type | S/MIME Compressed Message |
| Developer | N/A |
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What is a P7Z file?
P7Z files are associated with email client and personal data management applications such as Microsoft Outlook, Apple Mail, or Mozilla Thunderbird.
P7Z files store Zlib-compressed email messages encoded in S/MIME standard. In order to access P7Z contents email client must have a PKCS certificate installed. If the client cannot handle compressed data, P7Z file will be saved as smime.p7z file.
Program(s) that can open the .P7Z file
Windows
How to open P7Z files
If you cannot open the P7Z file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports P7Z among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the P7Z file can be found in the table. Now just download and install the appropriate application.
Possible problems with the P7Z format files
The inability to open and operate the P7Z file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the S/MIME Compressed Message file. Below is a list of possible problems.
- Corruption of a P7Z file which is being opened
- Incorrect links to the P7Z file in registry entries.
- Accidental deletion of the description of the P7Z from the Windows registry
- Incomplete installation of an application that supports the P7Z format
- The P7Z file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the P7Z file.
- Drivers of equipment used by the computer to open a P7Z file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the P7Z file should operate with your programs without any problem. If the problem with the P7Z file has not been solved, it may be due to the fact that in this case there is also another rare problem with the P7Z file. In this case, the only you can do is to ask for assistance of a professional staff.
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.P7Z) you have two ways to do it. The first and the easiest one is to right-click on the selected P7Z file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the P7Z file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. P7Z) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.