XAMPP - Error: MySQL shutdown unexpectedly - mysql

Question

I have reinstalled XAMPP for some reason and MySQL is not working, giving the following error in the console:
01:56:03 [mysql] Error: MySQL shutdown unexpectedly.
01:56:03 [mysql] This may be due to a blocked port, missing dependencies,
01:56:03 [mysql] improper privileges, a crash, or a shutdown by another method.
01:56:03 [mysql] Check the "/xampp/mysql/data/mysql_error.log" file
01:56:03 [mysql] and the Windows Event Viewer for more clues
When checking the "/xampp/mysql/data/mysql_error.log" file I get:
130302 1:48:06 InnoDB: Waiting for the background threads to start
130302 1:48:07 InnoDB: 1.1.8 started; log sequence number 1600324627
130302 1:48:07 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
130302 1:48:07 [Note] - '0.0.0.0' resolves to '0.0.0.0';
130302 1:48:07 [Note] Server socket created on IP: '0.0.0.0'.
130302 1:51:12 [Note] Plugin 'FEDERATED' is disabled.
130302 1:51:12 InnoDB: The InnoDB memory heap is disabled
130302 1:51:12 InnoDB: Mutexes and rw_locks use Windows interlocked functions
130302 1:51:12 InnoDB: Compressed tables use zlib 1.2.3
130302 1:51:12 InnoDB: Initializing buffer pool, size = 16.0M
130302 1:51:12 InnoDB: Completed initialization of buffer pool
130302 1:51:12 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
130302 1:51:12 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
130302 1:51:13 InnoDB: Waiting for the background threads to start
130302 1:51:14 InnoDB: 1.1.8 started; log sequence number 1600324627
130302 1:51:14 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
130302 1:51:14 [Note] - '0.0.0.0' resolves to '0.0.0.0';
130302 1:51:14 [Note] Server socket created on IP: '0.0.0.0'.
130302 1:56:01 [Note] Plugin 'FEDERATED' is disabled.
130302 1:56:01 InnoDB: The InnoDB memory heap is disabled
130302 1:56:01 InnoDB: Mutexes and rw_locks use Windows interlocked functions
130302 1:56:01 InnoDB: Compressed tables use zlib 1.2.3
130302 1:56:01 InnoDB: Initializing buffer pool, size = 16.0M
130302 1:56:01 InnoDB: Completed initialization of buffer pool
130302 1:56:01 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
130302 1:56:01 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
130302 1:56:02 InnoDB: Waiting for the background threads to start
130302 1:56:03 InnoDB: 1.1.8 started; log sequence number 1600324627
130302 1:56:03 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
130302 1:56:03 [Note] - '0.0.0.0' resolves to '0.0.0.0';
130302 1:56:03 [Note] Server socket created on IP: '0.0.0.0'.
That is just a part of the log, the full one is a bit too big.
Help?

Answer 1

Make sure you backup the mentioned folders before taking any action!
This worked for me,
Quit the XAMPP
Cut all files in C:\xampp\mysql\backup
Paste and replace files into C:\xampp\mysql\data
Run the XAMPP as administrator

Answer 2

In my case, I did two things:
moved xampp/mysql/backup files into xampp/mysql/data
RUN XAMPP as Administrator
It worked for me :)

Answer 3

First you need to keep copy of following somewhere in your hard disk.
C:\xampp\mysql\backup
C:\xampp\mysql\data
After that
Copy every thing inside "C:\xampp\mysql\backup" and paste and replace it in
"C:\xampp\mysql\data"
Now your mysql will work in phpmyadmin but your tables will show "Table not found in engine"
For this you will have to go to the copy of "backup and data folders"
which have created in your hard disk and there in the data folder copy
"ibdata1" file and past and replace in the "C:\xampp\mysql\data".
Now your tables data will be available.

Answer 4

Caution! Don't delete ibdata1 file!
Just follow these steps and its done.
Rename the folder C:\xampp\mysql\data to C:\xampp\mysql\data_old (you can use any name)
Create a new folder C:\xampp\mysql\data
Copy the content that resides in C:\xampp\mysql\backup to the new C:\xampp\mysql\data folder
Copy all your database folders that are in C:\xampp\mysql\data_old to C:\xampp\mysql\data (skip the mysql, performance_schema, and phpmyadmin folders from C:\xampp\mysql\data_old)
Finally copy the ibdata1 file from C:\xampp\mysql\data_old and replace it inside C:\xampp\mysql\data folder
Now Start MySQL from XAMPP control panel
And its all done, Enjoy...

Answer 5

If your skype is open, Quit skype and try,
or
Go to your xampp/wamp installed, search for httpd.conf.
Open that file using textpad/notepad, search for Listen or 80 ,
update listen port to 8081 and save the file.
Restart xampp/wamp, start the servers.
or follow below steps in skype

Answer 6

Rename the folder mysql/data to mysql/data_old (you can use any name)
Create a new folder mysql/data Copy the content that resides in mysql/backup to the new mysql/data folder
Copy all your database folders that are in mysql/data_old to mysql/data (skipping the mysql, performance_schema, and phpmyadmin folders from data_old)
Finally copy the ibdata1 file from mysql/data_old and replace it inside the mysql/data folder
Start MySQL from the XAMPP control panel

Answer 7

If Apache is running without any issue , and u find some blockage by system security settings , simply allow it instead of blocking or closing the dialog box.
And change the port number for MySQL to 3607 as it was before 3606 .
It worked for me .

Answer 8

To resolve this,
Go to your XAMPP folder,
XAMPP -> mysql -> bin -> "my.ini"
After opening my.ini configuration file, Replace 3306 with 3308 in couple of places, because 3308 is a free port.
XAMPP -> php -> "php.ini"
Do the same as you did in "my.ini" file which is changing port 3306 to 3308.
Then, restart the XAMPP server.
It works fine.

Answer 9

There may be MySQL server installed previously in your computer try to uninstall that and start MySQL at the XAMPP This solved mine

Answer 10

the true way is RECONFIGURE your app.with setup of MYSQL .you can open your setup again and change port from 3306 to 3307.

Answer 11

I would simply try reinstalling XAMPP.

Answer 12

one reason I found ( and not mentioned in addition to other answers given in this site on the similar problem ) was by going to task manager in windows and stopping the mysqld which was running already and prevented mysql server from starting.

Answer 13

You must:
Close the xampp
Go to the folder where you installed it, if in (c:) may be something like C:\xampp\ , access folder C:\xampp\mysql\data
Delete the file ibdata1
Starts XAMPP again.

Answer 14

The best solution for this problem is just open your mysql configuration directive file my.ini present inside the folder C:\xampp\mysql\bin and change the information related to the ports, usually some programs occupy the port no. 3306 as a result of that it stops working, Now you follow two steps to make it working.
enter code here
Step-1. Search for ['client'], you can see some thing like this
[client]
# password = your_password
port = 3306
socket = "C:/xampp/mysql/mysql.sock"
Now in the port section remove 3306 and add port = 3306 > 3307 as shown below.
[client]
# password = your_password
port = 3306 > 3307
socket = "C:/xampp/mysql/mysql.sock"
Step -2. Similarly Search for ['mysqld'], you can see something like this
[mysqld]
port= 3306
socket = "C:/xampp/mysql/mysql.sock"
basedir = "C:/xampp/mysql"
tmpdir = "C:/xampp/tmp"
datadir = "C:/xampp/mysql/data"
pid_file = "mysql.pid"
# enable-named-pipe
key_buffer = 16M
max_allowed_packet = 1M
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
log_error = "mysql_error.log"
Now here change the port number 3306 to 3307 and add a line "innodb_force_recovery = 1" exactly as shown below.
[mysqld]
port= 3307
socket = "C:/xampp/mysql/mysql.sock"
basedir = "C:/xampp/mysql"
tmpdir = "C:/xampp/tmp"
datadir = "C:/xampp/mysql/data"
pid_file = "mysql.pid"
# enable-named-pipe
key_buffer = 16M
max_allowed_packet = 1M
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
log_error = "mysql_error.log"
innodb_force_recovery = 1
Thats it, restart you mysql service, it will work for sure.

Answer 15

For anyone that searched and pressed on this link, i solved it by simply searching for mysql notifier and stop mysql from running there, Then run mysql in xampp again and it runs. why this works ? iam not expert, but i think it is easy : port was taken already by mysql notifier so had to stop it there and run it here.

Answer 16

I am new to XAMPP, but I find that a combination of these suggestions works best (At least on Windows 8.1 with the latest version of XAMPP. Note that the computer I tested this on, also had skype).
First logon to skype and navigate to "Tools < Options < Advanced < Connection."
Then check the box that says "Use port 80 and 443 for additional incoming connections." Save, close, and quit skype.
Next, on your XAMPP control panel, click "config < my.ini" and change lines 19 and 27 (should have port = 3306) from "3306" to "3307."
Also, you will need to navigate to xampp < phpMyAdmin < config.inc and change line 27, which should like something like this:
$cfg['Servers'][$i]['host'] = '127.0.0.1';
You will need to add "3307" as follows:
$cfg['Servers'][$i]['host'] = '127.0.0.1:3307';
Now, open your browser and you should see the xampp page when you type in "localhost."
Additionally, if this is your first time using xampp, you may see a warning about your lack of password (highlighted in pink) on your localhost/phpmyadmin/ page. This is easily remedied by going to the "user accounts" tab in phpmyadmin, clicking on "edit privileges" and entering password. Remember to save the hashed version of any and all passwords you create as we will use this next! -I opened a notepad and saved (and numbered) them. Note that phpMyadmin will notify you of when you are changing the password for your current session (this will be displayed at the top of your phpMyadmin page and is very important, as you will need THAT specific hashed version of your password).
Next, you will need to navigate to the following location "xampp < phpMyAdmin < config.inc" on your computer and open and edit the file with a text editor. You will want to put in the hashed version of your password between the single quotes for password and change "AllowNoPassword" from true to false.
And, that ought to do it.

Answer 17

In my case :
I have just replaced
....xampp/mysql/backup files
into
**xampp/mysql/data**
It worked for me.

Answer 18

if you inistalled mysql Independently
you can stop mysql service if running
no one of these answers are worked for me
this work for me

Answer 19

Well first thing ,, I know its late so I dont know if anyone will upvote it but oh well its okay,,
secondly, uninstalling xampp might not do you any good because the process using the port 3306 (Mysql's default port) will still be running somewhere on your system. might be skype, but might not be skype.
so the best way would be to find out which process is using port 3306, and then terminate the process.
so to find out which process is using port 3306, open command prompt, and type
netstat -n -o -a
you will get a screen like
this.
Then look for the address with port number 3306
and find out the PID corresponding to that.
Then simply open a command prompt as administrator and type
taskkill /F /PID 1234
replace 1234 with your respective PID.
Then you can try starting mysql and it will work.
And now if you are lazy to do this step all over again when restarting the computer,,,
you can simply use the following batch script to terminate the process automatically and enjoy :)
#echo off
setlocal enableextensions
set "port=3306"
for /f "tokens=1,4,5" %%a in (
'netstat -aon ^| findstr /r /c:"[TU][CD]P[^[]*\[::\]:%port%"'
) do if "%%a"=="UDP" (taskkill /F /PID %%b) else (taskkill /f /PID %%c)
endlocal
pause
save it as anything.bat and run it everytime you want to use mysql. :)

Answer 20

**
-> "xampp->mysql->data" cut all files from data folder and paste to another folder
-> now restart mysql
-> paste all folders from your folder to myslq->data folder
and also paste ib_logfile0.ib_logfile1 , ibdata1 into data folder from your folder.
your database and your data is now available in phpmyadmin..**

Answer 21

I did all methods but didn't find the perfect solution!
Install Laragon instead of Xampp , You will pray for me.

Answer 22

In my case I had to go to C:\xampp\mysql\data and delete all files (not folders) but keep ibdata1 and my.ini. Restartet XAMPP, everything running again.
Hope that helps someone - had to look for hours before finding that!

Answer 23

just run your xammp as an administrator, it works