File Extension B1

.B1 File

File extension: B1


Notes about the B1 file extension:



To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The B1 file type is primarily associated with '21st Century Mahjong'.

Detailed information for file extension B1:


Primary association: 21st Century Mahjong

Other applications associated with file type B1:

  • B1 Free Archiver by IT Management Group LTD
    The B1 Free Archiver is a free file archive manager that uses the b1 format to archive files and folders. The b1 archive format is an open source standard that uses the LZMA algorithm for data compression and the Adler-32 algorithm for integrity checking.
    ,   , This association is classified as Archive.
  • Progress (Database File) by Progress Software CorporationShould also be an associated .D1 file.



To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension B1 click this link to expand/hide the additional area.

System Info for File Extension .B1

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: QuattroPro.Notebook.10
EXEFile: %ProgramFiles%\Corel\WordPerfect Office 2002\Programs\QPW.EXE %1

ProgramID: QuattroPro.Notebook.11
EXEFile: %ProgramFiles%\WordPerfect Office 11\Programs\QPW.exe %1


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