How to run AVR Studio 4 in Windows 8.1 or higher operating system?

The purpose of writing this post “How to run AVR Studio 4 in Windows 8.1 or higher operating system?“, is because our students were always facing this problem of running AVR Studio 4 in Windows 8.1 or higher versions of Windows.┬áNow the problem is solved. Follow the procedure as given below:

Download .dll file first! Ah. Its .dll!

First download a particular modified dynamic link library file, msys-1.0.dll by clicking the following download button.


The .dll file for AVR Studio 4 to run in Windows 8.1 or higher 0 66 downloads

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Copy-paste this file!

  • After downloading, copy this DLL file i.e. msys-1.0.dll┬áinto to the WinAvr\utils\bin folder in your PC, where you have already installed AVR Studio 4.
  • If you do not find this location, then click C: drive in your PC. You will see one folder in the root named as WinAVR-2008xxx or something like this.
  • Open this folder and you will see one folder named as “util”. Open this folder also.
  • Now within this folder there is one more folder named as “bin”.
  • Open this folder lastly and paste our msys-1.0.dll file into this folder.
  • Windows will prompt you with an alert, where to replace the existing file. Click Yes.
  • That’s it! Your problem is solved.
  • Now, open your AVR Studio 4, create the project as usual in it and press F7 to build your source code. Everything will be ok, with no errors at all.
  • Download Win AVR (latest version) on


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