Error 5 : Access Denied when starting windows service

Question

I\'m getting this error when I try to start a windows service I\'ve created in C#:

My Code

Answer 1

I have monitored sppsvc.exe using process monitor and found out that it was trying to write to the HKEY_LOCAL_MACHINE\SYSTEM\WPA key. After giving permissions to NETWORK SERVICE on this key, I was able to start the service and Windows suddenly recognized that it was activated again.