Hi @Skylär Astaröt
As far as I know, it is just a warning not error. With passthrough authentication, IIS will attempt to use the actual identity of the user when accessing protected resources. If the user is not authenticated, IIS will use the application pool identity instead. If pool identity is set to NetworkService or LocalSystem, the actual Windows account used is the computer account. You can try the solutions below.
- You can try to set Application pool identity in anonymous authentication. Then access your website for test.
- This error may also be IIS_IUSRS. Please check folder security permissions. Give IIS user full access.
- Since you have reinstalled IIS, please check if your IIS installation is complete, provide a screenshot of IIS installation as below.
This is just a warning, I'm not sure if this is the reason you can't access your site. If you still can't access, please provide the error message when accessing.
Best Regard,
TengFei Xie
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