Acrobat cannot access the network. Please verify your computer's network connection and try again.

Consider the following scenario:

·         You create a French site collection in SharePoint Foundation 2010.

·         You upload a .pdf file to a document library in the French site collection.

·         You check out and edit the file.

·         You try to check in the file.

In this scenario, you receive the following error message:

Acrobat cannot access the network. Please verify your computer's network connection and try again.

If you are facing the above the scenario then Microsoft has already published the resolution for this and here is the link for it: http://support.microsoft.com/kb/2597136

Install the above mentioned hotfix and the issue will be resolved J

I would like to also mention that this hotfix has also fixes lot of issues and you will get a list of those fixes in the above mentioned provided link. Thank you.

How to install and configure Adobe PDF iFilter 9 for SharePoint 2010

Adobe PDF iFilter lets you index Adobe PDF documents in Microsoft SharePoint Server 2010 and Microsoft SharePoint Foundation 2010.

Install Windows Server and SharePoint. This step includes the following tasks:

Install Windows Server 2008.

 

Install the SharePoint prerequisites. To do this, run the Microsoft SharePoint Products Preparation tool. 

Install SharePoint 2010 and run the SharePoint Products Configuration Wizard. 

Configure a server farm topology. For example, configure a Single Server Farm. 

Create and configure a new Search Service application. 

Download and install Adobe PDF iFilter 9. For more information about how to download PDF iFilter 9, see Adobe PDF iFilter 9 on the Adobe Downloads website.

Download the Adobe PDF file icon. For more information, see Use of Adobe icons and web logos on the Adobe website.

Note Save the Adobe PDF file icon to the following file location:

\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\IMAGES\

Add the mapping entry to the docIcon.xml file. To do this, follow these steps: a.  Open the docIcon.xml file in Notepad.

Note:- The docIcon.xml file is located in the \Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\XML folder.

§  Type the following entry in the docIcon.xml file:

             <Mapping Key="pdf" Value="pdf16.gif" /> 

§  Click Save. 

§  Exit Notepad. 

Add the .pdf file type to the SharePoint content index. 

Click Start , type regedit in the Search programs and files box, and then press Enter.

Locate the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\14.0\Search\Setup\ContentIndexCommon\Filters\Extension

Right-click Extension , click New , and then click Key . 

Type .pdf , and then press Enter. 

Click .pdf , right-click (Default) , and then click Modify . 

Type the following GUID in the Value data box:

{E8978DA6-047F-4E3D-9C78-CDBE46041603} 

Exit Registry Editor. 

Restart the SharePoint Search Service. 

Restart all the SharePoint servers in the server farm. 

If you have any queries/questions regarding the above mentioned information then please let me know. I would be more than happy to help you as well as resolves your issues, Thank you.