500.31 occurs when .net Core deploys IIS, and the execution exe crashes
500.31 The exe execution of the published file appears in .net Core deployment IIS. This situation is mostly due to the fact that the SDK and runtime of .net core are not installed or the version is not new enough. You can enter the command dotnet -- on the server and local CMD info View version information
When I first executed the exe, it appeared in a flash, and I took a screenshot to see the log that appeared in the command window.
Therefore, if the version is the same and still cannot run, you need to consider checking the exe log, and you can check the error message by taking a screenshot or recording the screen
Download address reference:Download .NET 5.0 SDK (v5.0.404) - Windows x64 Installer (microsoft.com)
After I solved the above problems, 500.30 appeared. At the beginning, I also searched for solutions on the Internet. It was wrong to change IIS and the like. Finally, I found that the database connection string was wrongly written. This can be referred to because of different situations.
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