Title: Plugin Update Failed after 3.9.1 WP update
Last modified: August 21, 2016

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# Plugin Update Failed after 3.9.1 WP update

 *  Resolved [BarbaraAS](https://wordpress.org/support/users/barbaraas/)
 * (@barbaraas)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/)
 * Since updating WordPress to 3.9.1 I am now unable to update most of my plugins.
   I have read other posts that range between ()months and 5 years. I’m not sure
   which solution to choose.
 * I was able to successfully update to WordPress, update Genesis to 2.1.0, update
   a child theme and update 10 plugins on my Development Server. When I jumped over
   to my Production Server I successfully updated to WordPress 3.9.1 but then was
   unable to run the update to Genesis. I then tried running some plugin updates(
   a few updated with no issues) but got the following message:
 * Downloading update from [https://downloads.wordpress.org/plugin/pluginname.zip](https://downloads.wordpress.org/plugin/pluginname.zip).
   
   Unpacking the update… Installing the latest version… Removing the old version
   of the plugin… Could not remove the old plugin. Plugin update failed.
 * Since all the updates were successful on my Development Server but not on my 
   Production Server after installing the WordPress 3.9.1 update, I feel safe to
   assume the problem started with the WordPress update which affected some settings
   on my Production Server.
 * Does anyone out there have any suggestions on what I should look for?
 * Thanks!!

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Thread Starter [BarbaraAS](https://wordpress.org/support/users/barbaraas/)
 * (@barbaraas)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5161910)
 * Hellloooo, is anybody out there?
 *  [inthylight](https://wordpress.org/support/users/inthylight/)
 * (@inthylight)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162057)
 * [@barbaraas](https://wordpress.org/support/users/barbaraas/),
 * I experienced a similar phenomena after yesterday’s auto-update to 3.9.2. In 
   my case the problem was that the file permissions changed (inexplicably?) from
   www-data:www-data (the user:group under which PHP runs on my server) to root:
   root on select subfolders within /wp-content/plugins/. In order to get updates
   for those select plugins to work, I changed the permissions via the command line.
   From within /wp-content/, I ran:
 * `chown www-data:www-data -R plugins`
 *  Thread Starter [BarbaraAS](https://wordpress.org/support/users/barbaraas/)
 * (@barbaraas)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162064)
 * Lo, hey, thanks for your response.
 * I’m using Windows 2008 so I went into the folder properties of my plugins folder
   and opened up the Security tab. Looked for the IIS_IUSRS group so that I could
   edit the permissions. I checked “Allow” on the “Modify” row and saved the setting.
   I then tried to update a plugin and it updated. I tried deleting a plugin and
   it deleted.
 * I’m an administrator on my website and I have full security permissions on all
   folders. I’m surprised that I had to give users Modify permissions in order to
   be able to update plugins while logged in as an administrator.
 * Thanks for your help in this matter.
 *  [RavenMediaLLC](https://wordpress.org/support/users/ravenmediallc/)
 * (@ravenmediallc)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162223)
 * How do you run:
    chown www-data:www-data -R plugins from within WordPress?
 * I’m having the same issue.
 * Thank you,
    Kelly
 *  Thread Starter [BarbaraAS](https://wordpress.org/support/users/barbaraas/)
 * (@barbaraas)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162227)
 * Kelly, I’m using Windows/IIS. You must be using Apache/cPanel. I’m not familiar
   with either so maybe someone out there can help. Hello….anybody out there?!! 
   LO, are you still there?
 *  [RavenMediaLLC](https://wordpress.org/support/users/ravenmediallc/)
 * (@ravenmediallc)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162228)
 * Hi Barbara,
 * Thank you for the response. I ended up having to have my host to go in and change
   the permissions. Nothing I did worked.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Plugin Update Failed after 3.9.1 WP update’ is closed to new replies.

 * 6 replies
 * 3 participants
 * Last reply from: [RavenMediaLLC](https://wordpress.org/support/users/ravenmediallc/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-update-failed-after-391-wp-update/#post-5162228)
 * Status: resolved

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