Having problems opening a bk1 file?

Find out what programs can help open, view, play or convert your bk1 files.

Opening bk1 files
Autodesk Backup File

Did your computer fail to open a bk1 file? We explain what bk1 files are and recommend software that we know can open or convert your bk1 files.

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What is bk1 file?

Backup file created by Autodesk products, including AutoCAD Mechanical, Mechanical Desktop, and AutoCAD Map; stores a .BAK file that has been renamed with the ".bk1" extension; renamed when the Autodesk program terminates unexpectedly. BAK files are automatically created when users save drawing files. Therefore, when a program crashes, Autodesk applications try to rename the BAK file to BK1 to prevent a corrupted drawing file from replacing the original backup. NOTE: If the BK1 extension is already in use, Autodesk programs use ".bk2" through ".bk9," as well as ".bka" through ".bkz" and ".baa" through ".bzz" until a unique extension is found.

Software that will open, convert or fix bk1 files

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