Webcams are not supported for redirection.

The redirection of USB audio devices depends on the state of the network and is not reliable. Some devices require a high data throughput even when they are idle.

USB redirection is not supported for boot devices. If you run View Client on a Windows system that boots from a USB device, and you redirect this device to the remote desktop, the local operating system might become unresponsive or unusable. See http://kb.vmware.com/kb/1021409.

By default, View Client for Windows does not allow you to select Human Interface Devices (HIDs) and Bluetooth devices that are paired with an HID for redirection. See http://kb.vmware.com/kb/1011600.

RDP does not support the redirection of USB HIDs for the console session, or of smart card readers. See http://kb.vmware.com/kb/1011600.

RDP can cause unexpected problems when using USB flash cards. See http://kb.vmware.com/kb/1019547.

Windows Mobile Device Center can prevent the redirection of USB devices for RDP sessions. See http://kb.vmware.com/kb/1019205.

For some USB HIDs, you must configure the virtual machine to update the position of the mouse pointer. See http://kb.vmware.com/kb/1022076.

Some audio devices might require changes to policy settings or to registry settings. See http://kb.vmware.com/kb/1023868.

Network latency can cause slow device interaction or cause applications to appear frozen because they are designed to interact with local devices. Very large USB disk drives might take several minutes to appear in Windows Explorer.

USB flash cards formatted with the FAT32 file system are slow to load. See http://kb.vmware.com/kb/1022836.

A process or service on the local system opened the device before you connected to the remote desktop.

A redirected USB device stops working if you reconnect a desktop session even if the desktop shows that the device is available.

USB redirection is disabled in View Administrator.

Missing or disabled USB redirection drivers on the guest.

Missing or disabled USB redirection drivers or missing or disabled drivers for the device that is being redirected on the client.

If a redirected device remains unavailable or stops working after a temporary disconnection, remove the device, plug it in again, and retry the redirection.

In View Administrator, go to Policies > Global Policies, and verify that USB access is set to Allow under View Policies.

Examine the log on the guest for entries of class wssm_usb, and the log on the client for entries of class wswc_usb.

Entries with these classes are written to the logs if a user is not an administrator, or if the USB redirection drivers are not installed or are not working.

Open the Device Manager on the guest, expand Universal Serial Bus controllers, and reinstall the VMware View Virtual USB Device Manager and VMware View Virtual USB Hub drivers if these drivers are missing or re-enable them if they are disabled.

Open the Device Manager on the client, expand Universal Serial Bus controllers, and reinstall the VMware View Generic USB Device driver and the USB driver for the redirected device if these drivers are missing or re-enable them if they are disabled.