Debug.WriteLine() is not hit

Question

I am debugging a Windows service (by hitting F5 in Visual Studio 2010) using the following code:

In Program.cs file:

Answer 1

Seems the Debug symbols are missing.

1. Clean your solution, restart Visual Studio, rebuild the solution.
2. Make sure the Configuration Manager is in Debug mode.
3. Check in Tools > Options > Debugging and Uncheck "Enable Just My Code"

Happened to me and this seemed to help.