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Need license infomation for BITS service

MUDAPAKA Kishore K 25 Reputation points
2026-03-19T11:06:12.1833333+00:00

Hi,

Can you provide the license information to use BITS interface https://learn.microsoft.com/en-us/windows/win32/bits/bits-dot-net

Thanks,

Kishore

Windows development | Windows API - Win32
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  1. Taki Ly (WICLOUD CORPORATION) 150 Reputation points Microsoft External Staff Moderator
    2026-03-20T06:51:02.4766667+00:00

    Hello @MUDAPAKA Kishore K ,

    I have not found a Microsoft page that provides separate license terms specifically for BITS. In your case, I would lean toward treating BITS as part of the Windows platform, so if your application is only calling the BITS interfaces that are already present in Windows, that scenario may not be considered redistribution of BITS itself.

    If your main concern is the redistribution of generated interop files or other SDK-derived components, I would suggest checking the applicable license terms for the exact version of the Windows SDK you are using.

    I hope this information helps. If you have any further questions, please let me know in the comments. If you find the information helpful, I would appreciate it if you could leave feedback by following this guide.

    Thank you.

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  1. Marcin Policht 83,095 Reputation points MVP Volunteer Moderator
    2026-03-19T15:31:12.8166667+00:00

    AFAIK, there is no separate “license” specific to BITS. BITS is a Windows system component, and its interfaces are covered under the standard Microsoft Windows SDK / Windows OS licensing. The IDL files come from the Windows SDK, so their use follows the SDK license terms. The generated interop DLLs are derived artifacts for your application and can be used and distributed as part of your program, with the note that you typically do not need to ship them because their metadata can be embedded into your compiled executable.

    The core workflow is to take BITS IDL files from the Windows SDK (such as bits1_5.idl or bits10_2.idl), run them through the MIDL compiler to produce type libraries (.tlb), and then use TLBIMP to convert those into .NET reference DLLs. These DLLs act as managed wrappers over the native COM interfaces, allowing direct use in C#. You may need multiple versions of these DLLs if your application targets multiple BITS versions.

    An alternative approach is to use third-party .NET wrappers (from GitHub or NuGet), which are easier to use but may lag behind official interface updates. The manual approach gives you full control and access to the latest features.

    If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

    hth

    Marcin

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