seanism DOT com Random thoughts from the world of seanism


Unable to access SharePoint in Firefox on OS X

Firefox recently disabled pre-NTLMv2 authentication in Firefox 30.  This can cause issues in SharePoint and other IIS based sites.

To re-enable NTLMv1 support type about:config in the location bar, click the "I'll be careful" button, find network.negotiate-auth.allow-insecure-ntlm-v1, double-click on it to change the value to true.
NTLMv1 Error 401

Below is what Firefox wrote in their release notes.

NTLMv1 auth has been disabled, NTLM support on non-Windows platforms is now deprecated

The support for the NT LAN Manager version 1 (NTLMv1) network authentication has been disabled because it's known as insecure. Companies and organizations still deploying the older protocol should upgrade to NTLMv2. See Honza Bambas' blog post and Jason Duell's post to the dev-planning list for details.

This is affecting SharePoint-based or IIS-backed intranet applications. If you encounter any problems on Firefox 30 or later, you can manually enable NTLMv1 using a preference. Note that NTLMv2 is not supported on non-Windows platforms, so OS X and Linux users have to toggle the preference to continue using NTLMv1 as below, though the NTLM auth support on non-Windows platforms is considered deprecated.


You cannot view a list in Datasheet view after you install the 64-bit version of Office 2010

You cannot view a list in Datasheet view on a SharePoint website after you install the 64-bit version of Microsoft Office 2010.

When you click Actions and then click Edit in Datasheet on a SharePoint 2003 or 2007 site, or you click the List tab and then click Datasheet view on a SharePoint 2010 site, you receive the following error message:

The list cannot be displayed in Datasheet view for one or more of the following reasons:
• A datasheet component compatible with Microsoft SharePoint Foundation is not installed.
• Your Web browser does not support ActiveX controls.
• A component is not properly configured for 32-bit or 64-bit support.

Install the 2007 Office System Driver: Data Connectivity Components 


Windows 7 prompting for credentials when accessing SharePoint documents

You are prompted to enter your credentials, even though the user account that you are using has sufficient permission to access this site.

For example, when you open a Microsoft Office file from a Microsoft Office SharePoint site by using 2007 Microsoft Office on a Windows 7-based client computer that has no proxy configured, you are prompted for authentication.

you have to create a registry entry. To do this, follow these steps:

  1. Click Start, type regedit in the Start Search box, and then press ENTER.
  2. Locate and then click the following registry subkey:
  3. On the Edit menu, point to New, and then click Multi-String Value.
  4. Type AuthForwardServerList, and then press ENTER.
  5. On the Edit menu, click Modify.
  6. In the Value data box, type the URL of the server that hosts the Web share, and then click OK.Note You can also type a list of URLs in the Value data box. For more information, see the "Sample URL list" section in this article.
  7. Exit Registry Editor.
  8. Restart the WebDAV service.
  9. Open an elevated command prompt and type in net stop WebClient && net start WebClient
  10. Reconnect to your SharePoint site.

Add a PDF icon to PDF documents in SharePoint 2010

By default SharePoint uses a white icon for PDF documents.  It's rather plain.  To use a PDF icon follow these steps...

Download the PDF icon to your SharePoint server.

Navigate to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\IMAGES

Place the image in the IMAGES folder and name it icpdf.gif

Edit C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\XML\DocIcon.xml

Insert  <Mapping Key=”pdf” Value=”icpdf.gif”/> between the following lines...

<Mapping Key="onetoc2" Value="icont.png" EditText="Microsoft OneNote" OpenControl="SharePoint.OpenDocuments"/>
<Mapping Key=”pdf” Value=”icpdf.gif”/>
<Mapping Key="png" Value="icpng.gif"/>

Save the file and restart IIS.

Update: Make sure the quotes are correct when you paste the text into the configuration file. Compare them with the rest of the quotes in the document.