Issue when running mysqld - mysql

Question

I download mysql-5.7.9-winx64.zip and when i try to run mysqld i got this error :
E:\Softwares\mysql-5.7.9-winx64\bin>mysqld
mysqld: Could not create or access the registry key needed for the MySQL application
to log to the Windows EventLog. Run the application with sufficient
privileges once to create the key, add the key manually, or turn off
logging for that application.
mysqld: Can't change dir to 'E:\Softwares\mysql-5.7.9-winx64\data\' (Errcode: 2 - No such file or directory)
2015-11-13T10:45:09.715411Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_ti
mestamp server option (see documentation for more details).
2015-11-13T10:45:09.731411Z 0 [Warning] Insecure configuration for --secure-file-priv: Current value does not restrict location of
generated files. Consider setting it to a valid, non-empty path.
2015-11-13T10:45:09.732411Z 0 [ERROR] Cannot open Windows EventLog; check privileges, or start server with --log_syslog=0
2015-11-13T10:45:09.732411Z 0 [Note] mysqld (mysqld 5.7.9) starting as process 3532 ...
2015-11-13T10:45:09.864419Z 0 [Warning] Can't create test file E:\Softwares\mysql-5.7.9-winx64\data\yous-PC.lower-test
2015-11-13T10:45:09.864419Z 0 [Warning] Can't create test file E:\Softwares\mysql-5.7.9-winx64\data\yous-PC.lower-test
2015-11-13T10:45:09.864419Z 0 [ERROR] failed to set datadir to E:\Softwares\mysql-5.7.9-winx64\data\
2015-11-13T10:45:09.865419Z 0 [ERROR] Aborting
2015-11-13T10:45:09.865419Z 0 [Note] Binlog end
2015-11-13T10:45:09.945424Z 0 [Note] mysqld: Shutdown complete

Answer 1

You must run the Command Prompt as administrator. Then run mysqld.
To do this right click the Command Prompt startup icon and then select Run As Admininistrator. Then run mysqld and you should no longer see that error.
mysqld needs access to your registry the first time. you do not have to do this after the first time.

Answer 2

For development/debugging purposes i need a MySQL-Server without installation and don't want it to change my windows installation, e.g. by setting registry keys. MySQL's hint "start server with --log_syslog=0" works well:
mysqld -u root --log_syslog=0

Answer 3

try the MySQL Installer 5.7.9 to install it automatically mysql-installer-web-community-5.7.9.0.msi and it works.

Answer 4

Windows operating system will not allow you to make changes in certain system critical registry keys. Nevertheless, if you want to make changes even in such registry keys, you will have to take full control of these keys before Windows will allow you to make or save the changes.
check this link:
http://www.thewindowsclub.com/how-to-take-full-control-of-windows-7-registry-keys

Answer 5

I ran into the same problem on a Windows machine. I tried to "Run as Administrator" and change the path, but nothing prevailed.
It turned out Mysql wasn't reading the "my.ini" file.
I solved the problem by putting the "my.ini" file into the C:/Windows directory as it was pointed out in the official MySQL troubleshoot guide HERE

Answer 6

I run into both log error and data folder misconfig issues like you have.
Here is my solution:
Run the Command Prompt as administrator. Then run mysqld. - (just like user1660791 suggested)
For the path error, you need to make sure to \ instead of \ for path.
Example as below:
basedir = C:\\myfolder\\mysql-5.7.11-winx64
Have to post this as new answer due to i don't have permission comment of others post.

Answer 7

Use basedir = C:/myfolder/mysql-5.7.11-winx64 then find cmd.exe for the path: C:\Windows\System32\cmd.exe.
In order to do this, right click the Command Prompt startup icon and then select "Run As Admininistrator".