By default, Team Foundation Server (TFS) wants to expose services on port 8080. Installing for a client recently, I kept receiving a conflict during the pre-installation checks regarding 8080. There is an option to modify the port using an INI file associated with the installation but I didn't want to introduce a non-standard port for my client.
Running a netstat -a command from the command line revealed something running on port 8080 but failed to identify the process ID. Next, I downloaded TCPView from SysInternals (Microsoft), ran it, and "bam" there was: miniwinagent.exe. Excuse you? A quick search yielded this IBM KB posting. The EXE is a file copying agent for the IBM RAID hardware/software. Fortunately, I'm an admin on the box. I simply disabled the "ServeRAID FlashCopy Agent" service and let the hardware folks know what I had done.
Other helpful posts here and here.