Someone tell me what I'm doing wrong. Log file tells me the certificates are invalid. What next? 3:37:18 PM [main] Initializing Control Panel 3:37:19 PM [main] Windows Version: Pro 32-bit 3:37:19 PM [main] XAMPP Version: 5.6.28 3:37:19 PM [main] Control Panel Version: 3.2.2 [ Compiled: Nov 12th 2015 ] 3:37:19 PM [main] Running with Administrator rights - good! 3:37:19 PM [main] XAMPP Installation Directory: "c:\xampp\" 3:37:19 PM [main] Checking for prerequisites 3:37:26 PM [main] All prerequisites found 3:37:26 PM [main] Initializing Modules 3:37:26 PM [Apache] Problem detected! 3:37:26 PM [Apache] Port 80 in use by "Unable to open process" with PID 4! 3:37:26 PM [Apache] Apache WILL NOT start without the configured ports free! 3:37:26 PM [Apache] You need to uninstall/disable/reconfigure the blocking application 3:37:26 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port 3:37:26 PM [main] Starting Check-Timer 3:37:26 PM [main] Control Panel Ready 3:37:48 PM [Apache] Problem detected! 3:37:48 PM [Apache] Port 80 in use by "Unable to open process" with PID 4! 3:37:48 PM [Apache] Apache WILL NOT start without the configured ports free! 3:37:48 PM [Apache] You need to uninstall/disable/reconfigure the blocking application 3:37:48 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port 3:37:48 PM [Apache] Attempting to start Apache app... 3:37:49 PM [mysql] Attempting to start MySQL app... 3:38:00 PM [filezilla] Attempting to start FileZilla app... 3:38:01 PM [mysql] Status change detected: running 3:38:01 PM [filezilla] Status change detected: running 3:38:38 PM [main] Executing "c:\xampp\apache" 3:40:09 PM [Apache] Checking default ports... 3:40:09 PM [Apache] Attempting to start Apache app... 3:40:09 PM [Apache] Executing "c:\xampp\apache\bin\httpd.exe" 3:40:09 PM [Apache] Return code: 0 3:40:10 PM [Apache] Status change detected: running 3:40:11 PM [Apache] Status change detected: stopped 3:40:11 PM [Apache] Error: Apache shutdown unexpectedly. 3:40:11 PM [Apache] This may be due to a blocked port, missing dependencies, 3:40:11 PM [Apache] improper privileges, a crash, or a shutdown by another method. 3:40:11 PM [Apache] Press the Logs button to view error logs and check 3:40:11 PM [Apache] the Windows Event Viewer for more clues 3:40:11 PM [Apache] If you need more help, copy and post this 3:40:11 PM [Apache] entire log window on the forums 3:40:24 PM [main] Executing "c:\xampp\apache\logs" 3:41:18 PM [main] Executing "c:\xampp\apache" 3:42:52 PM [Apache] Checking default ports... 3:42:52 PM [Apache] Attempting to start Apache app... 3:42:52 PM [Apache] Executing "c:\xampp\apache\bin\httpd.exe" 3:42:52 PM [Apache] Return code: 0 3:42:52 PM [Apache] Status change detected: running 3:42:53 PM [Apache] Status change detected: stopped 3:42:53 PM [Apache] Error: Apache shutdown unexpectedly. 3:42:53 PM [Apache] This may be due to a blocked port, missing dependencies, 3:42:53 PM [Apache] improper privileges, a crash, or a shutdown by another method. 3:42:53 PM [Apache] Press the Logs button to view error logs and check 3:42:53 PM [Apache] the Windows Event Viewer for more clues 3:42:53 PM [Apache] If you need more help, copy and post this 3:42:53 PM [Apache] entire log window on the forums 3:43:00 PM [main] Executing "c:\xampp\apache" 3:44:30 PM [Apache] Checking default ports... 3:44:30 PM [Apache] Portblocker Detected: System 3:44:30 PM [Apache] Checking for App: c:\xampp\apache\bin\httpd.exe 3:44:30 PM [Apache] Portblocker Path: Unable to open process 3:44:30 PM [Apache] Portblocker Service Path: 3:44:30 PM [Apache] Problem detected! 3:44:30 PM [Apache] Port 80 in use by "Unable to open process" with PID 4! 3:44:30 PM [Apache] Apache WILL NOT start without the configured ports free! 3:44:30 PM [Apache] You need to uninstall/disable/reconfigure the blocking application 3:44:30 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port 3:44:30 PM [Apache] Attempting to start Apache app... 3:44:30 PM [Apache] Executing "c:\xampp\apache\bin\httpd.exe" 3:44:30 PM [Apache] Return code: 0 3:44:30 PM [Apache] Status change detected: running 3:44:31 PM [Apache] Status change detected: stopped 3:44:31 PM [Apache] Error: Apache shutdown unexpectedly. 3:44:31 PM [Apache] This may be due to a blocked port, missing dependencies, 3:44:31 PM [Apache] improper privileges, a crash, or a shutdown by another method. 3:44:31 PM [Apache] Press the Logs button to view error logs and check 3:44:31 PM [Apache] the Windows Event Viewer for more clues 3:44:31 PM [Apache] If you need more help, copy and post this 3:44:31 PM [Apache] entire log window on the forums 3:44:38 PM [filezilla] Attempting to stop FileZilla app... 3:44:38 PM [filezilla] Executing "c:\xampp\filezillaftp\filezillaserver.exe -compat -stop" 3:44:38 PM [filezilla] Return code: 0 3:44:38 PM [filezilla] Status change detected: stopped 3:44:41 PM [Apache] Checking default ports... 3:44:41 PM [Apache] Portblocker Detected: System 3:44:41 PM [Apache] Checking for App: c:\xampp\apache\bin\httpd.exe 3:44:41 PM [Apache] Portblocker Path: Unable to open process 3:44:41 PM [Apache] Portblocker Service Path: 3:44:41 PM [Apache] Problem detected! 3:44:41 PM [Apache] Port 80 in use by "Unable to open process" with PID 4! 3:44:41 PM [Apache] Apache WILL NOT start without the configured ports free! 3:44:41 PM [Apache] You need to uninstall/disable/reconfigure the blocking application 3:44:41 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port 3:44:41 PM [Apache] Attempting to start Apache app... 3:44:41 PM [Apache] Executing "c:\xampp\apache\bin\httpd.exe" 3:44:41 PM [Apache] Return code: 0 3:44:41 PM [Apache] Status change detected: running 3:44:42 PM [Apache] Status change detected: stopped 3:44:42 PM [Apache] Error: Apache shutdown unexpectedly. 3:44:42 PM [Apache] This may be due to a blocked port, missing dependencies, 3:44:42 PM [Apache] improper privileges, a crash, or a shutdown by another method. 3:44:42 PM [Apache] Press the Logs button to view error logs and check 3:44:42 PM [Apache] the Windows Event Viewer for more clues 3:44:42 PM [Apache] If you need more help, copy and post this 3:44:42 PM [Apache] entire log window on the forums 3:45:10 PM [main] Executing "c:\xampp\apache" 3:45:42 PM [main] Executing "c:\xampp\apache" 3:47:30 PM [main] Executing "services.msc"