Monthly Archives: October 2010

NTLM’s dependency on HTTP keep-alives (another cause of the dreaded 401.1 error)

This post involves a look into Microsoft’s proprietary NT LAN manager (NTLM) and its dependency on HTTP keep alives.

The client in this “tale” reported that their SharePoint site was available over the Internet via their proxy server (in this case ISA Server 2006), but not from within the server farm. In this scenario, they were attempting to use to provide workflow based business logic to their SharePoint 2007 site – and repeatedly getting a  (Unauthorized: Access is denied due to invalid credentials). Continue reading

My SPSUK 2010 notes – beyond the slides

After a rather busy weekend at Birmingham (SUGUK) and Nottingham (to visit an old friend), I figured it was about time I shared the notes that I made whilst at the UK’s first ever SharePoint Saturday. If you attended the event, you may have spotted me at the front row of most IT PRO sessions frantically scribbling notes and bashing out Twitter messages on my <popular multi-touch tablet>. If you didn’t manage to make it along to the event, I hope these notes will prove useful. Continue reading