The File Extensions Database

.B64 File Extension

  • Category: Compressed Files
  • Format: Binary

What is an .B64 file?

.B64 is Base64 MIME-Encoded File

Binary file encoded using base64 encoding; often used to convert text data into base64 data; enables more reliable transmission of e-mail attachments and other information; similar to a .MIME attachment.

Programs that open Base64 MIME-Encoded File
Smith Micro StuffIt Deluxe for Windows
Corel WinZip 23
ESTsoft ALZip
Ghisler Total Commander
Smith Micro StuffIt Deluxe 16

How to solve problems with B64 files

  • Associate the B64 file extension with the correct application. On :
    Windows: Right click on any B64 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.B64 files". Mac: Right click (or Ctrl-click) the B64 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .B64 is Base64 MIME-Encoded File. Because only the current version supports the latest B64 file format. Search, therefore, e.g. on the N/A manufacturer website after an available .B64 is Base64 MIME-Encoded File update.
  • To make sure that your B64 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.