Some files are missing about winbindex

[m417z]

Yes, that's a known limitation. Winbindex depends on the Microsoft public symbol server for the download links, which has pros and cons.

Pros:

• No need to actually host the files, which allows Winbindex to be as simple as a static website hosted on GitHub.
• No need to worry about the legal aspect of hosting and sharing Microsoft files.
• No need for anybody to trust me, a random guy on the internet, since the downloads link to msdl.microsoft.com.

Cons:

• Some files are unavailable, as you noticed. Other examples: msedge.exe, AppXDeploymentServer.dll, bridge.sys.
• The symbol server is prone to collisions (#139).

With the decision to depend on the Microsoft public symbol server, there's not much I can do about files which aren't available on the symbol server. What you can try is asking somebody at Microsoft to upload the files, it might actually help if you're lucky (cc @TimMisiak).

the scripts assume all files have debugging information on the symbol server

Right. I can detect missing files and mark them as such, but the availability status will have to be kept up to date in case the files are uploaded to the symbol server at a later time. I don't think it's worth the effort for the slight benefit of saving a click before finding out that the file is missing.