WinInet - won't work in a UWP project with Release mode

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WinInet - won't work in a UWP project with Release mode

Huang, Jiang 41

In a UWP project, the Wininet is used. It works well in Debug mode.
However, it doesn't work in Release mode.
the error message is "Unresolved P/Invoke method 'wininet.dll!InternetSetOption' from this method. Please look for this method in build warnings for more details. "
InternetSetOption is the method called, if another method is called, the problem still exists.

the demo project link: https://github.com/JokHuang/TestWininet.git

Anonymous

2022-07-19T06:33:43.693+00:00

@Anonymous Any updates about this? Does my reply make sense?
Huang, Jiang 41 Reputation points

2022-07-19T06:41:31.517+00:00

It really helps.
I got another question. I can clear the sessions by calling the InternetSetOption function when using wininet. Could you tell what functions can be used to clear the sessions in UWP without wininet?
Anonymous

2022-07-19T06:47:11.807+00:00

If my reply helps, you could accept it as answer. If you have a new question, please open a new thread for the new question. My teammate will check that.

Answer accepted by question author

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Anonymous

2022-07-19T06:33:43.693+00:00

@Anonymous Any updates about this? Does my reply make sense?
Huang, Jiang 41 Reputation points

2022-07-19T06:41:31.517+00:00

It really helps.
I got another question. I can clear the sessions by calling the InternetSetOption function when using wininet. Could you tell what functions can be used to clear the sessions in UWP without wininet?
Anonymous

2022-07-19T06:47:11.807+00:00

If my reply helps, you could accept it as answer. If you have a new question, please open a new thread for the new question. My teammate will check that.

Answer 1

Hello,

Welcome to Microsoft Q&A!

I've checked the code that you shared. The behavior you got is expected. You are using InternetGetCookieA function, InternetSetCookieA function and InternetSetOptionA function in your app. But all these methods as well as their extended method are available only for desktop apps. It means you can't use that in a UWP application. That's why you get exceptions in the release mode.

If you want to use these APIs in your UWP app, what you could do is create a console application and call these APIs from the console application. Then package the console app together with the UWP application via desktop bridge. You could search for UWP with Desktop Extension – Part 1 -stefanwick on the search engine to find a blog. It contains a tutorial about how to implement the desktop bridge.

Thank you.

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Huang, Jiang 41 Reputation points

2022-07-12T08:35:53.12+00:00

Thanks so much.
Suppose I use a DLL named A which contains wininet, then I create a UWP project named B using A. I can't build B in release mode, unless I package a console application together, right?
Anonymous

2022-07-12T08:49:17.507+00:00

Yes, that's right. These APIs needs to be called from a desktop app instead of the UWP app.

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WinInet - won't work in a UWP project with Release mode

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