Troubleshooting Plug-ins

Plug-in installation generally goes smoothly. If not, check for the following issues:

Common problems

  • If you do not reboot the system, the WANOP Client Plug-in will not run properly.
  • A highly fragmented disk can result in poor compression performance.
  • A failure of acceleration (no accelerated connections listed on the Diagnostics tab) usually indicates that something is preventing communication with the appliance. Check the Configuration: Acceleration Rules listing on the plug-in to make sure that the appliance is being contacted successfully and that the target address is included in one of the acceleration rules. Typical causes of connection failures are:
  • The appliance is not running, or acceleration has been disabled.
  • A firewall is stripping WANOP Client Plug-in TCP options at some point between the plug-in and appliance.
  • The plug-in is using an unsupported VPN.

Deterministic Network Enhancer locking error

On rare occasions, after you install the plug-in and restart your computer, the following error message appears twice:

Deterministic Network Enhancer installation requires a reboot first, to free locked resources. Please run this install again after restarting the computer.

If this occurs, do the following:

  1. Go to Add/Remove Programs and remove the WANOP Client Plug-in, if present.

  2. Go to Control Panel > Network Adapters > Local Area Connection > Properties, find the entry for Deterministic Network Enhancer, clear its check box, and click OK. (Your network adapter might be called by a name other than “Local Area Connection.”)

  3. Open a command window and go to c:\windows\inf (or the equivalent directory if you have installed Windows in a non-standard location).

  4. Type the following command:

    find “” oem*.inf

  5. Find the highest-numbered oem*.inf file that returned a matching line (the matching line is CatalogFile= and edit it. For example:

    notepad oem13.inf

  6. Delete everything except the three lines at the top that start with semicolons, and then save the file. This will clear out any inappropriate or obsolete settings and the next installation will use default values.

  7. Retry the installation.

Other Installation Problems

Any problem with installing the WANOP Client Plug-in is usually the result of existing networking, firewall, or antivirus software interfering with the installation. Usually, once the installation is complete, there are no further problems.

If the installation fails, try the following steps:

  1. Make sure the plug-in installation file has been copied to your local system.
  2. Disconnect any active VPN/remote networking clients.
  3. Disable any firewall and antivirus software temporarily.
  4. If some of this is difficult, do what you can.
  5. Reinstall the WANOP Client Plug-in.
  6. If this doesn’t work, reboot the system and try again.