SharePoint users and likewise other application users that use WebDav Explorer mode on Windows 7 and Windows Vista PC’s may experience very slow file browsing, opening and modification (e.g. SharePoint Explorer View using WebDAV).
How simple would it be to just uncheck a certain option in IE and fix this brain busting issue, especially for Network Admins and SP Admins?
- Open Internet Explorer
- Go to the Menu “Tools” > “Internet Options” then go to the “Connections” tab
- Click on button “LAN Settings”
- Uncheck the box “Automatically detect settings” (culprit)
- Close and restart all running Internet Explorer processes
- Restart the “Web Client” Service, if needed.
- Start browsing again…!
Now for a bit of knowledge building
What is the “Automatically Detect Settings” option in IE?
The “Automatically detect settings” option is there to help the user in configuring a web proxy automatically. It actually makes use of the WPAD protocol to discover a web proxy.
1. If the PC is configured to do DHCP, then it will query the server. If the response includes a string with id 252, then it uses this to retrieve a configuration file.
2. If this fails, then the PC will attempt to resolve the name wpad. It will start in its current domain, and work back through. Eg, if the PC is called bob.cs.anu.edu.au, it will attempt to resolve wpad.cs.anu.edu.au, followed by wpad.anu.edu.au, etc. If this resolves the name wpad, then IE will attempt to retrieve wpad.dat via http from the root of the server. You should probably redirect this to the configuration file.
3. If this yields no success, then IE goes direct.
Now here is your delay, when Step 1 and Step 2 are running, time-out – finally deciding to open your WebDav folders directly. Phew!
Skip it… if you do not require the auto-discovery feature. Ask your network admin to push a GPO to turn-it-off or uncheck it by default!