Knowledgebase: Wireless
Wireless drops in Vista
Posted by (Inactive) Jack Rawls, Last modified by (Inactive) Lacinda Riesland on 29 November 2011 02:37 PM

Try disabling Remote Differential Compression and TCP/IP Receive Windows auto-tuning and receive side scaling:

Remote Differential Compression (RDC) allows data to be synchronized with a remote source using compression techniques to minimize the amount of data sent across the network. Disable and turn off Remove Differential Compression feature in Vista may provide a solution to slow file copy, file move or file delete bug.

How to Disable Remove Differential Compression in Vista

  1. Click on Start button, then go to Control Panel.
  2. Click on Programs link.
  3. Under Programs & Features section, select Turn Windows Features on or off link.
  4. Unselect (untick) Remote Differential Compression checkbox.
  5. Click OK.
  6. Wait for the feature to be deactivated.
  7. When done, restart computer.

Vista TCP AutoTuning function is new feature of new TCP/IP stack in Vista that tunes and optimizes TCP receive window size for each network connection for optimum download/upload speed, while Receive Side Scaling (RSS) allows the network load from a network adapter to be balanced across multiple CPUs.

How to Disable Vista TCP AutoTuning and Receive Side Scaling

  1. Open an elevated command prompt with administrator rights, execute following commands:

netsh interface tcp set global autotuninglevel=disabled
netsh interface tcp set global rss=disabled

  1. Reboot computer.

 James Prior (Facilities)

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