Access denied to hosts file

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When I run my program in Visual Studio it works perfectly without admin privileges. But when I run program using .exe file error occurred - Access to path "C:/Windows/System32/drivers/etc/host"

Here's my code -

C#

Dim file As System.IO.StreamWriter
               file =    My.Computer.FileSystem.OpenTextFileWriter("C:/Windows/System32/drivers/etc/hosts", True)
               file.WriteLine("127.0.0.1 " + www.google.lk)
               file.Close()

What I have tried:

Tried running as Administrator
Change "asInvoker" to "highestAvailable" in app.manifest file
Tried giving access permission

Posted 20-Aug-16 1:19am

Member 12679544

Updated 22-Aug-16 21:48pm

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Bernhard Hiller · Answer 1 · 2016-08-22T21:48:00

That file is protected by Windows. You need Admin permissions. Likely, you have to remove some flags like read-only before you can write to it.
Also note that Windows uses "virtualization" when an application tries to write where it must not do so. Take a look at C:\Users\Your.Username\AppData\Local\VirtualStore.
By the way, file.WriteLine("127.0.0.1 " + www.google.lk) is likely wrong, I guess it should be file.WriteLine("127.0.0.1 www.google.lk") if you want to redirect any calls to the sri lankan google site to localhost.