Question: My application is raising an unauthorized access error. While running my application, I try to access a directory in the following location: Application.UserAppDataPath.

The Problem: It says I do not have permission to access the Application.UserAppDataPath directory

Is there a way to set permissions within my application source code? 

Something like:

```
Application.UserAppDataPath.SetPermissions()

```

Answer: 
Looking at your comment, you say this is your code:

```
StreamReader sr = new StreamReader(Application.UserAppDataPath);

```

`Application.UserAppDataPath` is a **directory**, not a *file*. If you try to open that directly, it's the same as trying to open a file one level *below* the AppData folder, which you really don't have permission to do.

Use `Path.Combine` to construct a path to a *file inside* the AppData folder, i.e.

```
string fileName = Path.Combine(Application.UserAppDataPath, "settings.xml");
StreamReader sr = new StreamReader(fileName);

```

Of course this is just an example - in reality you should probably be using a sub-folder inside AppData specific to your application.
Its probably a UAC issue, Try running your application as an elevated process, and see if the error persists