Wednesday, June 26, 2013

Disable Windows Customer Experience Improvement via Group Policy

To disable via GPO
  • Computer Configuration > Administrative Templates > System > Internet Communication Management, and then click Internet Communication settings
  • Turn off Windows Customer Experience Improvement Program
  • Set to Enabled

Disable tasks
Task Scheduler > Microsoft > Windows > Application Experience folder.
Disable:
- AITAgent
- ProgramDataUpdater

Task Scheduler > Microsoft > Windows > Customer Experience Improvement Program
Disable:
- Consolidator
- KernelCEIPTask
- Use CEIP
Applies to
Windows Server 2008
Windows Vista
Windows 7

Tuesday, June 25, 2013

Remote Desktop Connection client - bitmap cache storage

The Remote Desktop Connection client stores its bitmap cache in this location:

%UserProfile%\Local Settings\Application Data\Microsoft\Terminal Server Client\Cache

Friday, June 14, 2013

Virus scan on the client causes Remote Desktop performance issues

Issue
  • Users experience poor session performance
  • Caused by the virus scan product installed on the client PC

Troubleshooting
  • Issue was isolated by disabling virus scan software on the client
  • Note: Most virus scan products use a file system filter driver. The only way to completely "disable" virus scan is to uninstall it and reboot the computer.

Resolution
  • In one case, virus scan software was out of date by several months. The fix was to update the virus scan software and download the latest virus definition file
  • In another case that affected several locations, virus definitions had been automatically updated earlier in the day, and the new virus definitions caused the performance issue. The issue cleared when another virus definition update was published several days later

Thursday, June 6, 2013

Links to virus scan DAT updates and virus signature file updates for virus scan software vendors

Mysterious performance updates just show up all of a sudden?
Maybe a virus scan product updated itself today.

McAfee
http://www.mcafee.com/apps/downloads/security-updates/security-updates.aspx

Symantec
http://www.symantec.com/security_response/definitions.jsp

Trend Micro
http://downloadcenter.trendmicro.com/index.php?pattern_file=1

ESET
http://www.eset.com/us/threat-center/threatsense-updates/

Vipre
http://www.vipreantivirus.com/VIPRE-Antivirus/Definitions/

At the time of this writing, we have experienced 5 issues in 2 months that correspond with automatic updates to virus scan software. Some affected servers, some affected the end user desktops.