asp.net core - FastReport aspcore 404 error in production /_fr path unavailable

Question

We are running into an error when trying to deploy our asp.net core application to production with FastReport. It seems that when the report preview is generated, it creates a bunch of resource and file system links to the path /_fr

When we deploy the application on IIS in production, the application lives in a folder structure of its own: http://www.ourdomain.com/OurApp (C:inetpubOurApp)

The application pool for the application doesn't have access to the root folder under inetpub. When generating a report for preview, FastReport tries to write all of these resources to C:inetpub\_fr... and the URLs used to access these resources are

http://www.ourdomain.com/_fr/resources.getResource?resourceName=magnifier.svg&contentType=image%2Fsvg%2Bxml http://www.ourdomain.com/_fr/resources.getResource?resourceName=spinner.svg&contentType=image%2Fsvg%2Bxml http://www.ourdomain.com/_fr/resources.getResource?resourceName=reload.svg&contentType=image%2Fsvg%2Bxml http://www.ourdomain.com/_fr/preview.getReport?reportId=b43add31c4b64cc0a111ded240c9b565&renderBody=yes

We've tried changing the ROOT_BASE_PATH but it doesn't seem to help.

There's no problem if we export straight to PDF. It is only an issue with the preview function.

@if (ViewBag.WebReport != null)
    {
        @await ViewBag.WebReport.Render();
    }

Any insight to this issue would be helpful. We can't find documentation that explains how the preview is actually supposed to work

question from:https://stackoverflow.com/questions/65924920/fastreport-aspcore-404-error-in-production-fr-path-unavailable

Answer 1

I think this is an error caused by permissions, First of all, shouldn't the App be under wwwroot? You can try to move your "OurApp" to the wwwroot folder and try again. Then check if the IIS_IUSRS has permission for the wwwroot folder. By default, the IIS user does not have write permissions for the wwwroot folder.

1.Open File Explorer and go to C:/inetpub/

2.Right click on wwwroot and click on "Properties"

3.Go to the Security tab and click "Edit..." to edit permissions

4.Find and select the IIS user. In my case, it was called IIS_IUSRS ([server name]IIS_IUSRS).

5.Select the "Allow" checkbox for all permissions.