01B Files: What It Is and How to Open It

If you've received 01B files and can't open them for some reason, and you want to know what it is and what to do about it, keep on reading!

01B files are typically a type of binary file used by certain software, and many software packages can share a common file extension. In the case of files with an 01B extension, popular software packages such as Unknown Apple II File and PenSoft Payroll Backup File can open it.


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How to Open Your 01B File

The easiest way to open file extension 01B is to try downloading some of the most popular software that uses 01B extension. The most well-known programs associated with 01B files include Unknown Apple II File and PenSoft Payroll Backup File.

Computer Files

As you may already know, if you have Unknown Apple II File or PenSoft Payroll Backup File, you can simply double-click on your 01B and it should open up. But what if your software does not open the file?

First, try right-clicking on the file and selecting "Open With..." and select Unknown Apple II File or PenSoft Payroll Backup File from the dropdown list. If that didn't work, go into the file associations settings of Windows, and set Unknown Apple II File or PenSoft Payroll Backup File to open 01B files by default.

Please note that 01B file extensions may not be limited to Unknown Apple II File or PenSoft Payroll Backup File only. You could always do a Google search to find other software that uses 01B files and download that to try to open your file.

Still no luck? Get in touch with the developer of the software title to see if they can be of assistance. If your software does not have an identified developer in the chart below, a quick web search of the software title should give you some clues on who to contact.

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Software Developer
Unknown Apple II File found on Golden Orchard Apple II CD Rom
PenSoft Payroll Backup File Microsoft Developer


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1File types that are unsupported can be opened in binary format.

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