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Operating Systems

1. Windows Vista

1.1. WiFi disabled in US Army AGM8.x

Problem

Wireless network adapter hardware is installed and shows up in device manager but will not connect to network.

Cause

Windows WLAN AutoConfig service is turned off by default in US Army AGM images for Vista.

Solution

IMPORTANT: Customer must contact the US Army AGM support desk for this issue.

To enable WLAN AutoConfig open the services control (Open a command prompt and type services.msc at a command prompt) and double click the WLAN AutoConfig service then change Startup type to Automatic and click OK. Right click on WLAN AutoConfig and select Start.

1.2. Slow copy & paste over network

Problem

When using copy and paste over a network in Windows Vista it takes a long time to complete and is sometimes unresponsive.

Cause

Auto-Tuning feature in early version of Windows Vista causes this problem when copying files over a network with non-Vista computers.

Solution

Option 1 - Install latest service pack for Windows Vista.

Option 2 - Disable Auto-Tuning feature in Windows Vista.

1. Open up an elevated command prompt.

2. Enter the following command to disable auto-tuning.

netsh interface tcp set global autotuninglevel=disabled

To re-enable auto-tuning enter the following command from the elevated command prompt.

netsh interface tcp set global autotuninglevel=normal

To view the status of the TCP global parameters:

netsh interface tcp show global

More Information

Microsoft KB Article: When you copy large files to or from earlier operating systems, the copy operation may be slower than expected on some Windows Vista-based computers
http://support.microsoft.com/kb/932170

Microsoft KB Article: How to disable the TCP autotuning diagnostic tool
http://support.microsoft.com/kb/967475

2. Windows XP

2.1. Long delay before files appear in My Computer

Problem

When you click Start and then click My Computer, or when you double-click My Computer on your Windows desktop, Windows may search (a flashlight may appear) for a long time (for example, 5 minutes) before files appear.

Cause

This problem may occur if you install or use any of the following:

- Windows Image Acquisition (WIA)
- HP ScanJet 4400C/4470C
- HP ScanJet 5400/5470C
- RCA DCM 215 DSL Modem
- Cable Modem (model unknown)

Solution

To resolve this problem, use one or more of the following procedures, appropriate to the software or hardware that you have that are listed in the "Symptoms" section of this article.

Windows Image Acquisition
Stop the WIA service. To do so, follow these steps:

1. Click Start, and then click Control Panel.
2. Double-click Administrative Tools.
3. Double-click Component Services.
4. Click Services.
5. In the Services (Local) list, right-click Windows Image Acquisition (WIA), and then click Stop.

HP ScanJet 3400C
Unplug the HP ScanJet 3400C from the Universal Serial Bus (USB) port, and then restart Microsoft Windows XP.

HP ScanJet 5400/5470C
Unplug the HP ScanJet from the USB port, and then restart Microsoft Windows XP.

RCA DCM 215 DSL Modem
Unplug all other USB devices when you use this modem.

Cable modem (model unknown)
Unplug all other USB devices when you use your USB cable modem.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

2.2. USB Flash Drives and CD/DVD drives are not detected.

Problem:

When I try to use my flash drive, or play a CD/DVD, the drive is not detected.

Cause:

This issue can occur if there are corrupted or incorrect keys in the registry.

Solution:

Before attempting to repair your registry, it's always a good idea to back it up first.

To fix this problem, delete the UpperFilters registry value and the LowerFilters registry value. These values may cause access problems. To do this, follow these steps:

  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the UpperFilters registry value. This value is located in the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  3. On the Edit menu, click Delete, and then click OK.
  4. Locate and then click the LowerFilters registry value. This value is located in the following registry subkey:
  5. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  6. On the Edit menu, click Delete, and then click OK.

    Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey.
  7. Exit Registry Editor.
  8. Restart the computer.
Note If you remove both registry values, and then you lose functionality in a particular program such as CD recording software, you may have to reinstall that software. If this problem occurs again, contact the software vendor for help.


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