Knowledge Base

• USB redirection drivers problems

Check to see if the guest USB redirection drivers are installed and working.

1. Open Device Manager (devmgmt.msc).
2. Expand Universal Serial Bus controllers.

3. Check that the following two drivers are installed and working:

VMware VDM Virtual USB Device Manager and VMware VDM Virtual USB Hub.

 

• Client USB redirection drivers problem

Check to see that the client USB redirection drivers are installed and working.

1. Open Device Manager (devmgmt.msc).
2. Expand Universal Serial Bus controllers.
3. Check that VMware VDM Virtual USB Client Device Manager is installed and working.

• End user access problems

Make sure end users have administrator access on the client and guest.

• Device driver problem

Check that drivers are installed on the client for the device being redirected.

• USB redirection is not available to end users

Check that USB redirection is enabled in the VDM Administrator user interface Global Settings.

• Log entries
  

USB redirection log entries have a class called wssm_usb in the guest log and wswc_usb in the client log. These log entries are written when the user is not an administrator and if the drivers cannot be contacted because they are not installed or working.

• USB tips

USB redirection is not installed for Windows Web Access so it is not available if you are using Web Access

USB redirection is not available on Mac or Linux Web Access.

Very large USB disk drives can take several minutes to appear in Windows Explorer.  This can happen because of network latency when redirecting USB disk drives.

Device interaction is slower in general due to network latency.  Applications may appear frozen because they are designed to interact with devices that are local. 

 

In very rare circumstances it might be necessary to unplug and replug a device after it has been redirected.