Problem Detected; Apache Shutdown Unexpectedly

[sfborges79]

I received this error and I have no idea how to fix it. Hoping someone can guide me. FYI - I am inexperienced but have to download this for a class I am taking. Thanks in advance!

7:04:21 PM [main] Initializing Control Panel
7:04:21 PM [main] Windows Version: Home 64-bit
7:04:21 PM [main] XAMPP Version: 7.3.10
7:04:21 PM [main] Control Panel Version: 3.2.4 [ Compiled: Jun 5th 2019 ]
7:04:21 PM [main] You are not running with administrator rights! This will work for
7:04:21 PM [main] most application stuff but whenever you do something with services
7:04:21 PM [main] there will be a security dialogue or things will break! So think
7:04:21 PM [main] about running this application with administrator rights!
7:04:21 PM [main] XAMPP Installation Directory: "c:\xampp\"
7:04:21 PM [main] Checking for prerequisites
7:05:17 PM [main] All prerequisites found
7:05:17 PM [main] Initializing Modules
7:05:17 PM [Apache] Problem detected!
7:05:17 PM [Apache] Port 80 in use by "Unable to open process" with PID 4!
7:05:17 PM [Apache] Apache WILL NOT start without the configured ports free!
7:05:17 PM [Apache] You need to uninstall/disable/reconfigure the blocking application
7:05:17 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
7:05:17 PM [main] Starting Check-Timer
7:05:17 PM [main] Control Panel Ready
7:05:22 PM [Apache] Problem detected!
7:05:22 PM [Apache] Port 80 in use by "Unable to open process" with PID 4!
7:05:22 PM [Apache] Apache WILL NOT start without the configured ports free!
7:05:22 PM [Apache] You need to uninstall/disable/reconfigure the blocking application
7:05:22 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
7:05:22 PM [Apache] Attempting to start Apache app...
7:05:23 PM [Apache] Status change detected: running
7:05:24 PM [Apache] Status change detected: stopped
7:05:24 PM [Apache] Error: Apache shutdown unexpectedly.
7:05:24 PM [Apache] This may be due to a blocked port, missing dependencies,
7:05:24 PM [Apache] improper privileges, a crash, or a shutdown by another method.
7:05:24 PM [Apache] Press the Logs button to view error logs and check
7:05:24 PM [Apache] the Windows Event Viewer for more clues
7:05:24 PM [Apache] If you need more help, copy and post this
7:05:24 PM [Apache] entire log window on the forums
7:05:29 PM [Apache] Problem detected!
7:05:29 PM [Apache] Port 80 in use by "Unable to open process" with PID 4!
7:05:29 PM [Apache] Apache WILL NOT start without the configured ports free!
7:05:29 PM [Apache] You need to uninstall/disable/reconfigure the blocking application
7:05:29 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
7:05:29 PM [Apache] Attempting to start Apache app...
7:05:29 PM [Apache] Status change detected: running
7:05:30 PM [Apache] Status change detected: stopped
7:05:30 PM [Apache] Error: Apache shutdown unexpectedly.
7:05:30 PM [Apache] This may be due to a blocked port, missing dependencies,
7:05:30 PM [Apache] improper privileges, a crash, or a shutdown by another method.
7:05:30 PM [Apache] Press the Logs button to view error logs and check
7:05:30 PM [Apache] the Windows Event Viewer for more clues
7:05:30 PM [Apache] If you need more help, copy and post this
7:05:30 PM [Apache] entire log window on the forums
7:05:45 PM [mysql] Attempting to start MySQL app...
7:05:45 PM [mysql] Status change detected: running
7:06:06 PM [Apache] Problem detected!
7:06:06 PM [Apache] Port 80 in use by "Unable to open process" with PID 4!
7:06:06 PM [Apache] Apache WILL NOT start without the configured ports free!
7:06:06 PM [Apache] You need to uninstall/disable/reconfigure the blocking application
7:06:06 PM [Apache] or reconfigure Apache and the Control Panel to listen on a different port
7:06:06 PM [Apache] Attempting to start Apache app...
7:06:06 PM [Apache] Status change detected: running
7:06:07 PM [Apache] Status change detected: stopped
7:06:07 PM [Apache] Error: Apache shutdown unexpectedly.
7:06:07 PM [Apache] This may be due to a blocked port, missing dependencies,
7:06:07 PM [Apache] improper privileges, a crash, or a shutdown by another method.
7:06:07 PM [Apache] Press the Logs button to view error logs and check
7:06:07 PM [Apache] the Windows Event Viewer for more clues
7:06:07 PM [Apache] If you need more help, copy and post this
7:06:07 PM [Apache] entire log window on the forums

[Nobbie]

viewtopic.php?f=16&t=69784

You may also enter "Port 80 in use by "Unable to open process" with PID 4!" into Google.

[marialp]

Hi sfborges79,

I can see that sometimes you got it working, then you got conflicts with the port and pid and then it shutdown unexpectedly (that is outside of XAMPP).
You do not say what you did to cause the differences in behaviour but perhaps you ended the apache processes (there are two) in windows task manager, or perhaps you killed only one.

If apache (or any other module) was started by XAMPP and itd processes are running XAMPP stores the main process pid so it can recognise it when you call the application again after you shut it down, also so that it can kill it when you request it.
If you kill the apache processes (both of them) and then start XAMPP it should start with its own pid and everthing should be OK.

If this did not help and you need further help I would advise you provide sufficient information to diagnose the issue.

Altea´s has a great post int he Q&A section that explains what is required.

and here is a template you can fill in.
It is important that you state what actions you took for between different XAMPP actions because that may be significant to the issue.

XAMPP Version: for example 3.2.1 o the installer version for example 7.3.10_1
XAMPP Installation path:for example C:\xampp
Configuration changes since installation:For example JAVA upgrade
Issue report:
1- I did bla bla
2- I expected bla bla
3 - I got bla bla
XAMPP control panel log: This is the contents of the window in the control panel, it starts [main] Initializing Control Panel
Relevant error log/s (the content): For example C:\xampp\mysql\data\mysql_error.log

Cheers.

[sfborges79]

Thank you to both. After googling "Port 80 in use by "Unable to open process" with PID 4!" I was able to find a video that assisted me with fixing the issue and it is now working.

Again, thank you!