Accessing web folders you may experience slow directory browsing. One of my customers had an excel document that was linking through the intranet website to site specific excel files and was extracting data onto a single spreadsheet. They wanted this so they could look at a single spreadsheet that contains the values for all the sites.

This would take hours to complete when updating 80+ records. Excel would crash most of the time.

If there is no proxy server required for your LAN, de-select Automatically detect settings in the LAN Settings for Internet Explorer:

  1. Start Internet Explorer.
  2. Click Tools, and then click Internet Options.
  3. Click the Connections tab, and then click LAN Settings.
  4. De-select  Automatically detect settings.
  5. Click OK.


Close and re-open it to confirm improved response time.

Technical Information

What causes the problem is when the Microsoft WebClient issues a Web Folder/WebDAV command, it checks for a web proxy server before issuing each command. When Auto-Proxy detection is enabled and there is no proxy server in the environment between the client and Web Folder/WebDAV server (My Docs Online, for example), WebClient waits for the timeout of Auto-Proxy detection. Command completion will take longer due the wait for the Auto-Proxy detection timeout.

Thumbnails for files / folders

I have never had to do the below as the above solution has worked fine for me but just as an added bit of information I have included.

  • Open the Control Panel
  • Select Folder Options, then the View tab
  • Check the option “Always show icons, never thumbnails” and apply, as shown here:

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