.BUP File Extension

McAfee Quarantined File

Developer McAfee
3.8  |  279 Votes

What is a BUP file?

A BUP file is a quarantined file created by McAfee anti-virus products. It saves a backup of a file that was moved from another location on the computer because a virus or other malware was detected.

More Information

BUP files are saved to the following directory in Windows Vista and Windows 7:


The Quarantine directory on the local computer can become very large in size as more quarantined files are added. If you would like to remove the files manually, follow these steps:

  1. Go to Security Center → Navigation → General Settings and Alerts → Access Protection.
  2. Uncheck the "Use Access Protection" option.
  3. Delete the files from the Quarantine directory.

You can restore files from a quarantined file using the Quarantine Manager. However, there may be instances where the file was already deleted by the McAfee product. In this case, you can manually restore the files by following the steps in this McAfee knowledge base article:

How to restore a quarantined file not listed in the VSE Quarantine Manager

Open over 400 file formats with File Viewer Plus.Free Download

Programs that open BUP files

DVD IFO Backup

Developer N/A
3.6  |  153 Votes

A BUP file may also be a backup of a DVD-Video disc information (.IFO) file. It stores information about the contents of a DVD, which allows media players to navigate and play those contents. If a DVD's VIDEO_TS.IFO file is missing or corrupted, you can replace it with the corresponding BUP file.

More Information

IFO files contain headers that tell a DVD player (or other media player) what screen to load initially, when chapters start, and where a disc's video and audio data are located. Typically, discs also contain at least one BUP file, which contains a backup of the headers stored in the disc's VIDEO_TS.IFO file (a disc's primary IFO file).

How to replace an IFO file with a BUP file

To replace an IFO file with a BUP file:

  1. Note the IFO file's name.
  2. Delete the IFO file.
  3. Create a copy of your BUP file.
  4. Rename the copy to use the same filename (including the .ifo extension) as your deleted IFO file.

How to open a BUP file

Typically, BUP files are not meant to be opened by users. However, you can open a BUP file with Microsoft Notepad, Apple TextEdit, or any other text editor, to view the disc information it contains.

Programs that open or reference BUP files

Other DVD media players
Included with OS
Other DVD media players
Other DVD media players

Backup File

Developer N/A
3.5  |  41 Votes

A BUP file may also be a backup file created by one of various applications. Many apps automatically create BUP files to back up users' data. This allows the user to restore their data if the app crashes or their original file becomes corrupt.

More Information

For example, an animation program may automatically save a copy of a user's current animation project as a BUP file at regular intervals. This allows the user to restore their project from the backed-up state if needed.

In most cases, programs that create BUP files add the .bup extension to the file's normal extension, producing a compound extension like .ext.bup. To open these files, remove the .bup extension from their filenames, and then open them as you would normally.

How to open a BUP file

You can open a BUP file with the program that created the file. Typically, you can open a BUP file by:

  1. Removing the .bup extension from its filename. For example, you would rename example.proj.bup to example.proj.
  2. Opening the renamed file as you would normally.

However, the exact instructions for opening BUP files vary from program to program. If you're having trouble opening your BUP file, refer to your program's backup documentation.

Programs that open BUP files

All Platforms
Remove .bup extension; open with program that created the file

Verified by FileInfo.com

The FileInfo.com team has independently researched all file formats and software programs listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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