Kinds of B!K Files

Primary B!K File Association

.B!K

Formatting:	.b!k
Classification:	Microsoft Flight Simulator Scenery File

Files bearing the B!K file suffix are typically associated with the Microsoft Flight Simulator.

Organization:	Microsoft Corporation
Division:	Data Files
Registry Key:	HKEY_CLASSES_ROOT\.b!k

Software Programs That Open The Microsoft Flight Simulator Scenery File:

Microsoft Flight Simulator by Microsoft Corporation

Windows

Mac

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Troubleshoot B!K Files

Frequent B!K Opening Issues

Microsoft Flight Simulator Disappeared

You encounter an error message such as "%%os%% Can't Open B!K Files" when trying to open your B!K. If so, it typically means that you don't have Microsoft Flight Simulator installed for %%os%%. The typical path of opening your B!K with a double-click won't work because %%os%% cannot make the program connection.

Tip: If you don't have Microsoft Flight Simulator installed, and you know of another program to open your B!K file, you can try opening it by selecting from the programs listed under "Show Apps".

Outdated Microsoft Flight Simulator

In some cases, you might have a newer (or older) version of a Microsoft Flight Simulator Scenery File file that is unsupported by your installed application version. Download the latest Microsoft Flight Simulator version from the Microsoft Corporation website to ensure you have the correct one installed. Your Microsoft Flight Simulator Scenery File file was probably created by a newer release of Microsoft Flight Simulator than what's currently installed your computer.

Tip: Right-clicking on your B!K, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.

Conclusion: The majority of B!K file opening issues are due to not having the correct Microsoft Flight Simulator version installed.

Additional B!K Opening Issues

Even with the correct version of Microsoft Flight Simulator installed, you can still experience difficulties opening B!Ks. If you're still experiencing problems opening B!K files, there could be other computer problems. Problems unrelated to software:

• Invalid B!K file references in the Windows Registry (the "phonebook" of the Windows Operating System)
• Accidental deletion of the description of the B!K file in the Windows registry
• Invalid installation of a B!K-associated program (eg. Microsoft Flight Simulator)
• File corruption affecting your B!K file
• The B!K is infected with a virus
• Hardware associated with B!K has outdated drivers
• Windows has inadequate resources to open your Microsoft Flight Simulator Scenery File file