'Running ASP.NET application shows error 500 but .NET CORE runs well
Solution 1:[1]
Sounds like you have mixed applications in your App Pool.
Try creating a new application pool for the app - and ensure it is set to the correct settings. You may have a .Net2 and .Net4 application with same legacy app pool.
If that doesn't work - post your app pool settings
Sources
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Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Milney |

