Extract btosif_wincal.dll from .zip. We recommend that you extract btosif_wincal.dll to the installation directory of the program that is requesting btosif_wincal.dll.
If that doesn't work, you will have to extract btosif_wincal.dll to your system directory. By default, this is:
C:WindowsSystem (Windows 95/98/Me)
C:WINNTSystem32 (Windows NT/2000)
C:WindowsSystem32 (Windows XP, Vista)
C:WindowsSystem32 (Windows 7/8/2008r2/10/11)
C:WindowsSysWOW64 (Windows 7/8/2008r2/10/11)
If you use a 64-bit version of Windows, you should also place btosif_wincal.dll in C:WindowsSysWOW64
Make sure overwrite any existing files (but make a backup copy of the original file).
Reboot your computer.
If the problem still occurs, try the following:
Open Windows Start menu and select "Run...".
Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
Type regsvr32 btosif_wincal.dll and press Enter.
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Comment If your system prompts "not found btosif_wincal.dll" or "btosif_wincal.dll missing" or "btosif_wincal.dll error", please don't worry. After downloading the DLL file on this page using Internet express or Xunlei, decompress it with WinRAR and copy it directly to the original directory to solve the error prompt! I hope the btosif_wincal.dll we provide will help you!
