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IIS express: Cannot add duplicate collection entry of type 'add' with unique key attribute 'name' set to

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旧巷少年郎
旧巷少年郎 2020-12-29 02:11

In Visual studio, Solution->Web.Project->Properties->Web, I have changed my Project Url from http://localhost:51123/ to http://localhost:51123/NewProj

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  • 滥情空心
    滥情空心 (楼主)
    2020-12-29 02:45

    What worked for me. I deleted the {projectFolderParent}/.vs/config (you have to "show hidden folders/files)

    After deleting that, I restarted my computer.

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