Apache was working fine as usual before, until today when I tried to start Apache, it gave me the following error message :
[error] Apache: Service is already installed.
Errors reported here must be corrected before the service can be started.
I have already confirmed the following :
1. Port 80 isn't be listened by any process.
2. IIS has been removed.
3. Already tried re-installing Apache, with no luck.
Can someone here provide some more solutions to resolve this issue?