Yesterday in windows 7 with IIS 7.5 runs under a previously written using .NET Framework 3.5 project, found 500.19 error always appears as follows:
Baidu for a long time, did not find the exact answer to your question, and I know for sure is the question of powers, of course, after some attempts, finally resolved, the solution is as follows (personal method, you can try):
1. Find your configuration file folder where I is the E: \ Source \ ASP.NET \ DtCms10Beta2
2, right-click Properties, switch to the "Security" tab, add IIS-IUSRS user group to the security list, and press demand (I gave the authority to modify) given its permission, change the following figure:
3, view the security permissions of web.config, if the user has permission to this group's success is explained, otherwise the next step;
4, back to the root folder, open the "Security" tab, select the IIS-IUSRS user group, click "Advanced" to open the Advanced Security Settings dialog box, select the IIS-IUSRS user group, click on the "change permissions" to open the editable advanced security settings dialog box, the following figure on the check button to choose red zone,
Then click OK to inherit permissions to all child objects on it.
Completion of the above steps, if not solve the problem, in the IIS in selected applications, the basic set point, a point behind the application pool selection, the dialog box inside the selection, the following attributes display the version of .NET, select below your version of the application on it, I chose the Classic .net AppPool (Note: Because my application is lower than the current Framework version .NET, so it should be set as the Classic .net AppPool).
Reproduced in: https: //www.cnblogs.com/Alenliu/p/4046420.html