Title: IIS7 Plugin Hell
Last modified: August 20, 2016

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# IIS7 Plugin Hell

 *  [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/)
 * Using IIS7, PHP 5.3, and can’t update plugins. I’ve added IUSR to the Plugin 
   folder, then to the Content folder, then to the whole dang site with modify rights
   but still can’t update plugins. When I do try to update a plugin I get this;
 *     ```
       Unpacking the update…
   
       Installing the latest version…
   
       Removing the old version of the plugin…
   
       Could not remove the old plugin.
   
       Plugin update failed.
       ```
   
 * Not only does the plugin fail, but it is no longer in the full list of plugins,
   not even disabled, not even there anymore. I have to reinstall it.
 * This has been going on this way for many months and I keep revisiting this issue
   trying to see if someone out there has some wisdom on this. Anyone who can put
   the answer to this on their blog is going to have a bonanza of hits with it. 
   I see a lot of chatter on the matter but no solutions.
    Thanks for a little help,–
   Cory

Viewing 8 replies - 1 through 8 (of 8 total)

 *  [sofaking21](https://wordpress.org/support/users/sofaking21/)
 * (@sofaking21)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437105)
 * Here’s my preferred method: run your application pool under a service account.
   Then, make sure that anonymous authentication uses the application pool identity
   instead of impersonating IUSR. Then, set up all your NTFS (and share permissions
   if you’re using DFS or some other network share) for the service account. I only
   allow full permissions for the wp-content folder; everything else is read/execute.
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437115)
 * sofaking21, Thanks.
    I’m not sure how to change the application pool setting.
   I’ve never messed with it before. The rest of it I get. Any pointers?
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437167)
 * I found what you are talking about.
    `Set Application Pool Defaults/Process Model/
   Identity` It didn’t fix the problem but thanks for the effort.
 *  [sofaking21](https://wordpress.org/support/users/sofaking21/)
 * (@sofaking21)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437199)
 * Is this a production environment? I’d run PROCMON and monitor where it’s failing.
   It really sounds like a permissions issue to me.
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437258)
 * I have a test site that I’m working in to find the problem. It’s some kind of
   issue with IIS’s caching. After I try to run an update, the plugin folder of 
   the plugin I try to update is locked in a way that I can’t even open it. If I
   restart IIS then I can.
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437270)
 * Yep! Caching.
    I highlighted my test site, opened “Output Caching”, Clicked “
   Edit Feature Settings” on the top right, and unchecked both boxes. I restarted
   IIS and I was able to update plugins after that. There are those of you who’d
   say “Just use Ubuntu”, and you’d be right, but where’s the challenge in “Set 
   it and forget it”? Case closed. – Cory
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437273)
 * You can leave Kernel Caching on.
 *  Thread Starter [palmtek](https://wordpress.org/support/users/palmtek/)
 * (@palmtek)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437307)
 * This link has the correct answer. I haven’t tried it this way with caching turned
   back on though.
    [http://www.pmdconsulting.biz/blog/plugin-upgrade-failed-in-wordpress-using-iis-7/](http://www.pmdconsulting.biz/blog/plugin-upgrade-failed-in-wordpress-using-iis-7/)

Viewing 8 replies - 1 through 8 (of 8 total)

The topic ‘IIS7 Plugin Hell’ is closed to new replies.

## Tags

 * [IIS7](https://wordpress.org/support/topic-tag/iis7/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 8 replies
 * 2 participants
 * Last reply from: [palmtek](https://wordpress.org/support/users/palmtek/)
 * Last activity: [14 years, 5 months ago](https://wordpress.org/support/topic/iis7-plugin-hell/#post-2437307)
 * Status: not resolved

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