The RealSched.exe process is the RealPlayer Automatic Upgrade Program RealPlayer Automacticly Update. Generally, there is no big use, the method of deleting is simple.
Enter: "Start - Run":
Regsvr32 / u "C: / Program Files / Real / RealPlayer / RPAU3260.DLL"
Note: Double quotes are the path to the RPAU3260.dll file, and must be modified according to the actual situation of your system.