Invalid File Permissions

All-in-One WP Migration plugin needs proper file and folder permissions to work. It needs properly set permissions to create folders ‘ai1wm-backups’ and ‘storage’ in specific paths:


‘storage’ folder creates, uses and eventually deletes temporary files used during import and export processes. The application inside wp-content directory creates the  ‘ai1wm-backups’ folder and uses it for keeping backups. For the processes to work properly, files and folders permissions for these two places need to be set accordingly.

‘storage’ folder must be present inside /wordpress/wp-content/plugins/all-in-one-wp-migration, and ‘ai1wm-backups’ must be present inside /wordpress/wp-content path. If the plugin is unable to create them, you would need to create the folders manually and provide them 0777 permissions to operate. This permission means granting rights to read, write and execute for owner, group and all other users within that directory.

Granting the folder 0777 permissions using the file explorer follows a few steps. Open files properties with your right button:

Choose the “Security” menu from the window. Click the username that needs permissions to use the file/folder – Authenticated Users, then click edit to edit their permission settings:

Then mark the checkbox for full control to grant all types of actions for that user. Click Apply and close the window.

Execute the above described actions for both ‘storage and ‘ai1wm-backups’ after you create them in order for the All-in-One WP Migration plugin to be able to process export and import successfully.



  1. LPort

    Hi there, I’ve been using ‘All In One Migration WP’ plugin for quite some time BUT today the plugin just won’t work, it will not export or import any files.
    The ‘error’ dialog box brought me here, but…., Where do I find this “file manager”? In my hosting server or my PC?

    I appreciate your help.

    Also, the captcha thingy below is really bad.

    1. Anna Angelova


      Thank you for your question.
      By File Manager, please conside ‘File Explorer’. I will edit the text now, so it will not have any confusing meaning anymore.


  2. Florian


    same here, using this plugin since ALOT of time… really alot.
    Today permission error on two of my websites… (different servers) ; maybe an update problem of the plugin ?

    1. Anna Angelova


      Thank you for your question.

      You can off course update the plugin version to the latest one, but also you would need to check permissions on filesand folders on your servers.
      If the problem still persists, please reach us at


  3. Guillermo

    Hola, no me deja hacer backup nunca tuve problemas con el complemento, lo que dices de dar permiso es para windows, pero en mac? como seria?

  4. Rufino Velasco

    Uso el plugin aIo-migration + One-drive extension en diferentes webs y solo en una se produce el aviso
    Unable to open ……./wp-content/plugins/all-in-one-wp-migration/storage/6163fd52e3607/media.list with mode r
    en todas los permisos de los folders estan en 0755 y los files en 0644
    ¿porque tenemos que cambiar el estandar de wp a folders 0777

  5. Сергей Шабанов

    My hosting has run out of the limit on files. I deleted the old sites and everything continued normally.

  6. Miquel Pujante

    In case you cannot modify the server permissions you should check that you have enough free disk space.

    In my case 100% of the disk was used and there was no space left to rewrite everything.

    I have been using the plugin for more than two years now and it is the first time that it gave me a failure despite having the permissions ok. And it was simply due to lack of available space

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