How to Open BAK Files

Are you having trouble opening BAK files ? Do you know what they actually are? We've compiled information about this file format and will present it to you below. We also recommend suitable software for opening or converting these files.

Most BAK files present in a computer system are automatically generated by a program in the system folders.

These BAK files can contain anything from a web browser 's bookmarks to the files of a software application that needs regular backups.

What Is A BAK File?

The BAK extension conventionally stands for " Backup " and is appended to the name of a backup file. This is a functional, not format-oriented, extension, as it indicates the purpose of a file rather than the format itself.

A backup file is a complete textual copy of a file, made in case the original file becomes corrupted or lost.

BAK files are created, either manually or automatically, exactly for backup purposes.

This is done especially in relation to system configuration files, startup scripts, user account data, password hashes, and other critical system files.

The BAK extension would replace the original extension or simply be added to it.

A BAK file can be a file of any type or format. Sometimes, it is possible to tell the type or format of the original file by the original extension.

Creating backup BAK files before making changes to the original files is good practice and should be followed whenever possible.

BAK files, however, tend to accumulate and can take up a lot of storage space . Old, redundant, and unnecessary BAK files can be safely deleted.

How to Open BAK Files?

When an application says it is saving recently made changes to data stored on the computer, it changes the old file extension BAK to a new one.

Thus, if the application fails in one way or another, the lost data can be recalled. This way, minimal data loss can be ensured in the first place.

Most of the .bak files that are automatically created and stored are database backups representing SQL Server databases.

However, other programs like Word and Excel can also create such backup files. There is no standard program available for importing or extracting information directly from files saved with the .BAK extension.

Restoring the .bak file is the only way to view and edit the content that has been backed up through a software application. If you have an XLS extension file, you must use the Excel application to open the XLS file.

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Steps to open the .bak file

As discussed above, .bak files can be created automatically or manually by multiple programs. And if you have no idea about the file history, you should follow some steps that can help you to successfully extract the information.

If you know something about the file history related to the program from which the backup was made, then you should open the desired program and look for restore options through it.

Open saved BAK file in SQL

The following is a set of instructions you need to follow to open the BAK file that is stored as a SQL Server backup.

To access information stored as a backup file, it must be restored to its original state. If you try to open a saved .bak file using Notepad, you will only see a list of corrupted characters.

• Opens ssms (SQL Server Management Studio). If you don't have it, download it from their official website.
• From the database you are about to restore the BAK file from, right-click on it and then navigate to “Tasks".
• Then click on "Restore".
• In the small menu, select “Database".
• In the window that opens, select the “From device” option.
• Then click on it to browse and load the .bak file from the destination folder location.
• A window will appear “Specify backup”, in which you must click on the button “Add” to choose the previously saved BAK file extension.
• The next screen will remain in the local drive directory that is present on your computer system. Navigate to the folder that has the .bak file and select it to begin the restore process.
• Once you have selected the file, click on the “OK” and then press the “ button againOK” to return to the home screen.
• Make sure to check both “Empty transaction log backup" as "Full database backup” to successfully restore the file.
• Once both options are selected, press the “Accept” and wait until the restore confirmation window appears.

Now all backed up databases are online and you can easily access them whenever you want.

Rename the extension

If you know the correct extension of the program that created the .bak file, you can restore it by renaming it to its original extension format.

For example, if you want to open the BAK file that was identified as a Word document, you need to remove the bak extension and rename it with the DOC extension.

If the desired file name has been saved as “myfile.bak”, then you need to change the file type by renaming it to “myfile.doc”.

After renaming it, you can directly open the file with Microsoft Word and access the saved content.

The same process applies to .bak files saved as a backup of a Notepad document. You must rename the .bak file extension to .txt to view the data saved within them.

Finding the original file format of a backed up .bak file

If you have no idea about a .bak file present on your computer, and you cannot find out the exact program that created it, then you need to open it as a text document using a text conversion software.

By trying to open the BAK file through such text editors, you may find the exact program that backed up the data in the first place.

All you need to do is read the uploaded text file and look for extensions that may indicate the extension of the original file in one way or another.

For example, if the file is named “myfile.bak” and is located in a strange folder on your hard drive, you must first open it with a text editing software such as Notepad++.

Then, among all those codes and letters, look for something you can identify as belonging to a particular program. For example, if you find "ID3" in the text, it's almost certainly an MP3 file , since ID3 is used to store metadata for these files.

Then, rename the file from “myfile.bak” to “myfile.mp3”. This will allow you to access the file in question.

Similarly, if the BAK opened in a text editor shows several tables or text-like elements, then you should realize that the original file format is CSV.

Follow the same renaming process by adding .csv instead of .bak and then open it with Microsoft Excel to get more information about the saved data files.

And if that doesn't work, don't worry, just change the file back to BAK and keep searching.

To close

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Remember, BAK files do not behave like any other file, as it is a general extension for backups. It can be opened by any program, and you only need to know the program that created it in order to use it and open the file.

You can get several files of this type on your PC, since the system automatically makes backups and security copies from time to time.