How to disable the Adobe Reader Check Out & Open Message in SharePoint?

Hello,

you need to add the mime type for PDF to the web application. That can be done with Powershell.

A very detailed description and the required Powershell statements are in this Microsoft Technet article:  SharePoint: Browser File Handling Deep Dive

cheers, teylyn

Not sure this is right teylyn - but I wish it were because we have the same issue and wish I knew of a cure so happy to be proved wrong!

PDF is fully trusted and all operations work as normal but the adobe reader (not sharepoint) now has a "feature" whereby if a pdf is opened from a sharepoint library it offers the user the option to check the document out of the library prior to opening.
If the user takes the time to read the dialogue they will select "open" and all is well.
Unfortunately that is not always the case and often they will click "check out and open" which displays the doc they read it and then move on thinking all is well.
Unfortunately this means that the document remains checked out behind.
Not a massive issue as normally PDF documents are the finished article and don't require editing... others can still read the pdf if checked out.
But it looks confusing to users and reports on checked out files (records management purposes) will paint a false picture

Do you have steps in Central Admin on the SharePoint server?

I've googled this for my own needs prior and the only solution I could get (from adobe's own support) was to uninstall adobe reader, install an older version and block any future updates.
Hopefully someone, sometime will create an update that allows this option to be toggled as an option or in the registry

Here is another possibility - from central admin, go to the Web Application management level.

From there, go to General settings in the ribbon, then general settings again.  from that dialog scroll down to "Browser File Handling" and read very carefully the description because it has security implications. The setting to have files open in the browser is "Permissive". I have never had any problems setting it to permissive, but I can't speak to every security situation there is out there. Once set to permissive, PDF's should open in the browser with no prompts.

Hope that helps,

The changing from strict to permissive is the way to allow opening of PDF and other file types, yes.

But the original poster is specifically trying to get rid of the annoying splash screen which gives the user the option to check out a file before athe document is opened.
This is an adobe acrobat thing not a sharepoint thing and interacts directly with the libraries check out document function.

A (fairly) new and very irritating "feature" from Adobe.

Thanks for the clarification.

Well I have acrobat reader v11 on my client and v9.5 on the server (I have tried to run an update on the server but it says 9.5 is the latest... must be due to windows server not client OS)

The reg key mentioned in the adobe article says it applies to v10.0 or higher.
So I went (on my client) to the registry and looked at the default key. It was already set to 0.
I created a new DWORD and gave it the name mentioned in the article, set it's value to decimal 0 and rebooted.

Went to a pdf in a sharepoint library, clicked to open it and the checkout option still came up :(

J, you rock!

That will come in useful.

Thanks, but do I have to do this for every client?  Is this a server side setting?  Seems like a client setting,

I'm afraid it's a client side settings. It's an adobe thing (not SharePoint) and Adobe lives on the client.
If you are in a networked environment you can roll out the reg entry via group policy or logon scripts or similar

I set the registry key setting and that work.

I did the Permissive setting in Central Admin and that did not work.  This is for SharePoint 2013 and Adobe Reader/Acrobat 11.  However, I have SharePoint 2010 sites and I have that same setting and it seem to work there.