Cannot start session without errors in phpMyAdmin

Question

I get the below error when pointing browser to phpMyAdmin     Cannot start session without errors  please check errors given in your PHP and or webserver log file and configure your PHP installation properly    I have checked everything and can t seem to figure out what the problem is    In my php ini file I have   session save path     var lib php session    Permissions     drwxr-xr-x  2 root apache 4096 Feb 16 04 47 session   Nothing seems to work  Even changing permission on session directory to 777

User · Answer

In my case  problem was due to low disk space  I want to mention it for other users like me

User · Answer

There appears to be two common causes for this error  one is to do with the server configuration and the session save path and the other is the browser cache   If you encounter this error try using a different browser or machine before you attempt to alter your Apache and PHP configurations on the server    Note that clearing the Cookies for the server is not enough  you need to clear the cache    In Firefox clearing all history and cookies is easy  but you may not want to get rid of everything  Clearing the cache is hidden away in Firefox   Tools   Options   Advanced   Network  Cached Web Content - Clear Now

User · Answer

Ok   I m using windows 7 ultimate and WAMP 2 4 server The tmp folder was missing  so I created one and this solved my problem  Check the php ini file for the correct path  session save path

User · Answer

The problem can also be that you have a wrong session save handler value in your php ini  I got this error when I changed it to memcached  and worked again when changing back to files

User · Answer

The problem can be due to file and folder permissions  You can try changing the folder permissions   sudo chmod 777  var lib php session    This will set full read write permissions on the PHP sessions folder   Note  the php session  folder may be in a different location on some servers  Check your php ini for your session path

User · Answer

Problem usually lies on your browser end    You need to flush your browser cache  delete the cookies for the server host and then retry loading phpMyAdmin   If you want to go all out  clear out the session folder on the server as well   One possible reason for this is a session data mismatch between the browser and the webserver causing it to not be able to pull out the required session info and dumping this error dialogue on your lap

User · Answer

Login fails if session folder in not writeable  To check that  create a PHP file in your web directory with    lt  php  sessionPath    undefined    if     sessionPath   ini get  session save path            sessionPath   isset   ENV  TMP        ENV  TMP     sys get temp dir       if   is writeable  sessionPath         echo  Session directory      sessionPath       is not writeable     else       echo  Session directory        sessionPath      is writeable       If session folder is not writeable do either  sudo setfacl -R -m u www-data rwx  lt session directory gt  or chmod 777  lt session directory gt   -

User · Answer

I recently had this very same problem  It was resolved by truncating the temp directory where php stores its session data   ie for a Unix OS  OP ref  file  this temp directory will differ for your OS   find  var lib php session -type f -delete   After truncating the directory I was able to start phpmyadmin without issue  I hope this helps others with the same problem if changing ownership and or permissions fail

User · Answer

Knowing this thread is marked as solved  it shows up early on Google Search for the given term  So I thought it might be useful to mention another reason that can lead to this error   If you enabled  safe secure cookies   that has to be disabled for phpMyAdmin as it wont work with them being activated  So make sure you have nothing like   Header set Set-Cookie HttpOnly Secure   in your config

User · Answer

Set the session save path in your php ini  Make sure that you are using an existing directory   If still you found any issue then give write  amp  execution permission to that folder for the user by which you are going to use that folder  This is specially used in case of IIS

User · Answer

Problem I found in Windows server 2016 was that the permissions were wrong on the temp directory used by PHP  I added IUSR

User · Answer

In my case it was the wrong ownership for  var lib php session   I changed that to the Apache user and group  the user and group that the webserver runs as  and all was well

User · Answer

I cleared browser cache   Created session folder as listed in phpinfo php   It worked

User · Answer

For Xampp  Deleting temp flies from the  root  folder works for me   TH

User · Answer

First  if not session dir  in my case it was   sudo mkdir  var lib php session   Second  set privilege for session dir  sudo chmod 777  var lib php session

User · Answer

This is sometimes due to an invalid session key   If using XAMPP  what worked for me was opening the temp folder in XAMPP  xampp temp then deleting the session files starting with sess

User · Answer

STOP 777     If you use nginx  like me   just change the ownership of the folders under  var lib php  from apache to nginx    root centos     cd  var lib php   root centos php   ll total 12 drwxrwx---  2 root apache 4096 Jan 30 16 23 opcache drwxrwx---  2 root apache 4096 Feb  5 20 56 session drwxrwx---  2 root apache 4096 Jan 30 16 23 wsdlcache   root centos php   chown -R  nginx opcache   root centos php   chown -R  nginx session   root centos php   chown -R  nginx wsdlcache   root centos php   ll total 12 drwxrwx---  2 root nginx 4096 Jan 30 16 23 opcache drwxrwx---  2 root nginx 4096 Feb  5 20 56 session drwxrwx---  2 root nginx 4096 Jan 30 16 23 wsdlcache   And also for the folders under  var lib phpMyAdmin     root centos php   cd  var lib phpMyAdmin  root centos phpMyAdmin   ll total 12 drwxr-x---  2 apache apache 4096 Dec 23 20 29 config drwxr-x---  2 apache apache 4096 Dec 23 20 29 save drwxr-x---  2 apache apache 4096 Dec 23 20 29 upload   root centos phpMyAdmin   chown -R nginx nginx config   root centos phpMyAdmin   chown -R nginx nginx save   root centos phpMyAdmin   chown -R nginx nginx upload   root centos phpMyAdmin   ll total 12 drwxr-x---  2 nginx nginx 4096 Dec 23 20 29 config drwxr-x---  2 nginx nginx 4096 Dec 23 20 29 save drwxr-x---  2 nginx nginx 4096 Dec 23 20 29 upload

User · Answer

I worked on this same problem for a full day    The answer for me was to simply clear my browser s cache   Too bad  I had already reinstalled the webserver phpmyadmin 3 times

[php] Cannot start session without errors in phpMyAdmin

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