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CER File Extension

CER file extension is created by Developer, also known as Internet Security Certificate. CER has been classified as Common File Types. This File type categories under Zip, Text, Binary and XML, however, the format of this file format has not been determined yet. You can open CER files in Microsoft Internet Explorer program.



Internet Security Certificate File Type

Internet Security Certificate File Type
Extension .cer
Developer Not Available
Popularity 5.0 (103 Votes)
Mime Type text/x-c
Default Program Microsoft Internet Explorer
Category Common File Types
Format Binary
Updated 6/1/2024

What is a CER File Type?

The CER files can be viewed by clicking on the locking icon near the edge of the icons; a browser window when' a secure site (secured sites use SSL encryption as seen by ;" https: / / /" prefix in the' URL) is accessed.

Secure certificate information can be viewed in Internet Explorer and Firefox by double-clicking on the icons located near the bottom right corner-of the browser window. To view the Safari certificate, click on the locking icon located at the top-to the right of the browser window.



Free online CER Tools & Apps

We have also the free online .CER (Internet Security Certificate) file extension apps that can allow to view, edit, convert from to CER, merge, split and compare the CER files without installing anything on your system. Please click on the links to explore the complete list of details for each required feature.



CER Files Common Issues

There are few common issues with the Internet Security Certificate .CER File Extensions while opening the .CER files on Windows and MacOs, we have solution to those issues such as:

Can't Open CER Files?

  1. You must have supported software programs installed for Internet Security Certificate on your system such as Microsoft Internet Explorer.
  2. Associate default Microsoft Microsoft Internet Explorer program for *.cer (Internet Security Certificate) files.

    Associate CER Default Program on Windows
    1. Right-click a *.CER (e.g example.cer) file and click Open With.
    2. In the Open with dialog box, click Microsoft Microsoft Internet Explorer program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .cer files.

    Associate CER Default Program on MacOs
    1. Click *.CER (e.g example.cer) file and click information -> Open With.
    2. In the programs list, click Microsoft Microsoft Internet Explorer program Or other appropriate program that you want.
    3. Confirm Change for all... and Contine.
    4. A message will appear "This change will be applied to all files with .Microsoft Internet Explorer extension. By clicking Continue you confirm your selection", click Contine to apply changes.


All Platform Software Programs for CER File Extension

List of all softwares that can open the CER files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open CER File on Windows

Software License Developer
Adobe Acrobat image. Adobe Acrobat DC 2019 for Windows Commercial Adobe
Microsoft Edge image. Microsoft Edge 80 for Windows Bundled Microsoft
Mozilla Firefox image. Mozilla Firefox 75 for Windows Open Source Mozilla
Microsoft Internet Explorer image. Microsoft Internet Explorer 11 for Windows Freeware Microsoft
Adobe Reader image. Adobe Reader DC 2018 for Windows Freeware Adobe
Trend Micro Ransomware File Decryptor image. Trend Micro Ransomware File Decryptor 000 for Windows Free Trend Micro Ransomware File Decryptor

MacOs logo image - FileProInfo.comOpen CER File on Mac OS

Software License Developer
Adobe Acrobat image. Adobe Acrobat DC 2019 for MacOs Commercial Adobe
Microsoft Edge image. Microsoft Edge 80 for MacOs Bundled Microsoft
Mozilla Firefox image. Mozilla Firefox 75 for MacOs Open Source Mozilla
Apple Keychain Access image. Apple Keychain Access 10 for MacOs Bundled Apple
Adobe Reader image. Adobe Reader DC 2018 for MacOs Freeware Adobe
Apple Safari image. Apple Safari 12 for MacOs Bundled Apple

Linux logo image - FileProInfo.comOpen CER file on Linux

Software License Developer
Adobe Acrobat image. Adobe Acrobat DC 2019 for Linux Commercial Adobe
Mozilla Firefox image. Mozilla Firefox 75 for Linux Open Source Mozilla
Adobe Reader image. Adobe Reader DC 2018 for Linux Freeware Adobe

Website logo image - FileProInfo.comOpen CER file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen CER file on iOS

Software License Developer
Microsoft Edge image. Microsoft Edge 80 for iOS Bundled Microsoft
Mozilla Firefox image. Mozilla Firefox 75 for iOS Open Source Mozilla
Apple Safari image. Apple Safari 12 for iOS Bundled Apple

Android logo image - FileProInfo.comOpen CER file on Android

Software License Developer
Microsoft Edge image. Microsoft Edge 80 for Android Bundled Microsoft
Mozilla Firefox image. Mozilla Firefox 75 for Android Open Source Mozilla

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

CER file extension icon image.About CER - Internet Security Certificate

FileProInfo is to help you understand about the Internet Security Certificate with *.CER suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for CER. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for CER, please let us know.

Updated 6/1/2024


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