WordPress Image Upload Problem using IIS on Windows Server 2008

by Matt on September 24, 2009

We had some issues at work with uploading images to our WordPress blog. It was super annoying. We kept getting the following error when trying to upload an image using the Upload/Insert function in WordPress:

“The uploaded file could not be moved to C:\inetpub\www\website\wp-content\uploads”

It was difficult to find a solution because there is a large majority of WordPress users who use Apache as the web server. I was finding little info on IIS7 and Server 2008.  I saw plenty of forum posts with the exact problem.  The particular poster would then reply to his own detailed question and say “Thanks everyone! I figured it out on my own.” Ah WHAT? Post what your solution was so it benefits the community. So this is why I am posting this on my blog.

Most of the recommenced solutions were to give the IUSR account write/modify permissions to all the directories down to the uploads directory.  This did not work for me.  We dug into IIS7 and started looking at the authentication section of IIS7 for that site. “Anonymous Authentication” was set to a user that did not exist. So we changed it to use the application pool identity and it worked great.

WordpressUploadIssue2

Go to the authentication section of the site.

WordpressUploadIssue4

Select the "Anonymous Authentication" from the middle list once in the authentication section of the site.

WordpressUploadIssue5

Click on Edit on the Action menu on the right side.

WordpressUploadIssue

Select the Apllication pool identity radio button

This worked great. I could instantly upload a image to a WordPress post.  I hope this helps you out in your journey to solve the permissions issue with the image unloader in IIS7 and WordPress.

Feel free to comment if the solution worked for you.

{ 45 comments… read them below or add one }

Anonymous September 21, 2018 at 1:25 pm

This worked for me, I had the same problem you did with finding a solution. Thanks for the tip.

Anonymous September 21, 2018 at 1:25 pm

thank you very very much…

Anonymous September 21, 2018 at 1:25 pm

This worked for me, I had the same problem you did with finding a solution. Thanks for the tip.

Anonymous September 21, 2018 at 1:25 pm

thank you very very much…

Aberrabike October 22, 2009 at 4:52 am

Perfect! Works for me!

Thank you very much

Rick March 17, 2010 at 8:24 am

THANK YOU!!! I saw many of the posts you reference, i.e., “Thanks, I figured it out on my own” along with other helpful replies like “You should switch to Apache” etc. etc.

This worked like a charm. Next time I’m in MN I owe you the beverage of your choice.

Matt March 17, 2010 at 10:08 am

Glad I could help Rick! I posted this just for the reasons you commented on.

serdar June 21, 2010 at 8:25 am

thank you very very much…

serdar June 21, 2010 at 3:25 pm

thank you very very much…

Jack September 9, 2010 at 7:47 am

This worked for me, I had the same problem you did with finding a solution. Thanks for the tip.

Jeff September 22, 2010 at 11:27 pm

Thanks buddy!

rcm01 October 3, 2010 at 3:39 pm

Thanks very much. Getting Wordpress installed on my 2008 server has been ridiculously arduous. Hopefully the most important thing that someone gets out of this is your point on posting the solutions you find yourself.

Oskar Reftel October 21, 2010 at 9:50 am

THANK YOUUUUUUUUU!!!!!!

Oncemor November 1, 2010 at 9:35 pm

Hey this was a great help.nnAnyone aware of Security issues with opening Application Pool Identity?n

Guest November 20, 2010 at 4:14 am

Holy Jesus- this was the most annoying problem. You are so right- 10,000 forum posts of everyone having the same problem, and not a word on wordpress.org forums giving any clue how to solve, but everyone just yammering on about file permissions and crazy mods to the wordpress installation. Of all the fixes, the one above is apparently the only actual solution, and it isn’t shown anywhere. Thank you, thank you, thank you…

Rbobaru December 16, 2010 at 8:27 pm

Yes, this worked – but you must also, using windows explorer, go to the ‘uploads’ folder and set permissions for II_IUSR ‘modify and write’. Then, it worked for me.

Luis Angel Camargo February 18, 2011 at 11:09 pm

thank you man, I had a similar problem. Wordpress uploaded the image in the correct folder, but it wasn’t appeared in the browser. I owe you a beer!

Roberto March 24, 2011 at 12:54 pm

Thanks for taking the time to help the community by posting the solution. This worked like a charm for me.

Allan July 10, 2011 at 8:43 pm

This didn’t work for me! But I gave IUSER Write permission to uploads folder and that worked…
I don’t like that I can’t change this from the IIS manager.

Tom July 21, 2011 at 7:51 pm

Thanks, for that post!! I hate that when people say “Thanks everyone! I figured it out on my own.” It cost me several hours to find the solution, so thanks!!!!!

wethanet August 17, 2011 at 3:38 am

Perfect thanks.  Had tried setting permissions on folders, but new files never inherited those permissions.  This worked a treat.

Schorsch August 18, 2011 at 3:02 pm

Thx for sharing. Works like a charm!

Nick September 27, 2011 at 6:43 pm

Thanks, I was missing this step. Now it works!

Anthony September 30, 2011 at 2:04 pm

Thank you!!! This was making me crazy!

Kostik November 3, 2011 at 8:30 am

Thanks very much.

Peicheck November 9, 2011 at 8:35 am

THIS WORKED FOR ME!

WOHO!!!!thanks!

Mart December 6, 2011 at 7:55 am

Great fix. Thanks for sharing.

Dee December 21, 2011 at 3:55 pm

Fabulous, this saved me a lot of pain! Worked perfectly.

Bug March 28, 2012 at 6:10 pm

Thank you, thank you. I spent about a a day and a half on this until a Bing search for “wordpress can’t upload images+IIS” brought this up at #2 reference. Wonderful.

Teknologist April 10, 2012 at 6:59 am

Thank you so much for posting this! This drove me crazy for a while!

Mark Monforti April 20, 2012 at 11:18 am

Any thoughts on IIS4?  I am having the same problem.  One other thing that worries me is the slashes are backwards

The uploaded file could not be moved to C:wordpress/wp-content/uploads/2012/04.

phantom April 23, 2012 at 8:54 am

If you had single sign on configured that’s using the Windows authentication for the site, this could probably be not the solution. It’s better to stick to the IUSER permissions.

Palani P April 30, 2012 at 5:46 am

wow… thanks this is working perfectly.

Gordon May 17, 2012 at 6:24 am

Just discovered this post had exactly the same problem and your advise was superb all on my side working now. I sometimes think that Microsoft sits and plans for hours as to how to make these issue complicated!
Best wishes and thanks Gordon

El Loko June 27, 2012 at 3:22 pm

 This also resolve that issue with not being able to auto-update from 3.1 to 3.4

Email July 14, 2012 at 1:46 pm

Thankyou!

Ralph Lindner July 27, 2012 at 8:52 am

thank you for sharing your solution!

Dclar162 August 6, 2012 at 6:25 am

I too was concerned with the app_pool identity solution…though it does work, I did not want to open a security hole. This guys solution actually worked as well. http://wordpress.org/support/topic/iis-image-upload-view-issues  As stated, because on Windows, wordpress uploads to a temp directory, then copy the files to the uploads directory, thus inheriting the permissions from the temp dir (which does not have Iusr access. I followed the recommended steps with creating a new temp dir c:wordpress_upload_temp, giving iusr read/list access and in the php.ini file (usually located at C:Program Files (x86)PHPv5.3) setting the following property value upload_tmp_dir = c:wordpress_upload_temp
check out Danny_T solution on this forumhttp://wordpress.org/support/topic/iis-image-upload-view-issues
Hope this helps as an alternative for those concerned with security on a production server. Cheers..DeShon

chris November 24, 2012 at 1:18 pm

Thank you for this!

Chris P December 11, 2012 at 12:18 pm

This worked for me. Thank you thank you thank you!

KC Abramson January 30, 2013 at 10:09 am

I can’t thank you enough for this post

scenario77 March 5, 2013 at 11:40 am

my hero

It works! March 7, 2013 at 2:44 pm

thank you!!

Igor Salma March 26, 2013 at 1:50 am

Thanks man!! 🙂

kirthi July 18, 2013 at 2:31 am

great! thx

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