asp.net - GetFolderPath(SpecialFolder.ApplicationData) returns empty string

Question

I saw many old questions like this but it is not my case.

Asp.net application is running in AppPool (iis in win10) with 'load user profile' enabled.

And nevertheless Environment.GetFolderPath(ApplicationData or LocalApplicationData) returns an empty string. CommonApplicationData returns correct folder.

I ensure that {user}AppData is exist on disk.

So, question: how can I get not empty string for AppData?

Answer 1

It is not enough to enable 'loadUserProfile' option in IIS!

You have to enable another one option. This is 'setProfileEnvironment'. I didn't find IIS UI to change it.

Open file in %windir%system32inetsrvconfigapplicationHost.config and add or change attributes for your application pool.

<configuration>
    <system.applicationHost>
        <applicationPools>
            <add name="YourPool" >
                <processModel  
                 loadUserProfile="true" 
                 setProfileEnvironment="true"/>

And after that you can get ApplicationData or LocalApplicationData path!