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Home > Success Center > Archive > 2018April16 - Deletes > Failover Engine (FoE) > How to Manually Install or Uninstall the SolarWinds Orion Failover Engine Packet Filter Driver

How to Manually Install or Uninstall the SolarWinds Orion Failover Engine Packet Filter Driver

Updated July 7th, 2016

Overview

How to Manually Install or uninstall the SolarWinds Orion Failover Engine Packet Filter Driver

Environment

NeverFail on FoE

Steps

Prior to performing the procedure to uninstall the SolarWinds Orion Failover Engine Packet Filter, please ensure that you have reviewed this entire Knowledge Base article.   

 

 

How to Uninstall the SolarWinds Orion Failover Engine Filter

  1. Stop the SolarWinds Orion Failover Engine services and set Neverfail Server R2 service to manual for the duration of this procedure.
  2. Dissolve any existing NIC team using the vendor-supplied software. 
    Note: If the server does not use teamed NICs, please disregard this instruction and continue with step 3 below.
  3. If uninstalling on a passive server, disconnect the principal network cable.
  4. From a command prompt change the directory to C:\Program Files\SolarWinds\FoE\r2\bin
  5. Run: nfpktfltr uninstall "\SolarWinds\FoE\r2\drivers\nfpktfltr\" 
  6. Delete C:\winnt\system32\drivers\nfpktfltr.sys.
  7. Delete C:\winnt\nfpktfltr*.
  8. Verify that the following key(s) have been removed using the following procedure:
    1. Open Regedt32.
    2. Go to HKLM\SYSTEM\CurrentControlSet\Enum\Root\nfpktfltr_mp (highlight nfpktfltr_mp if it exists) and select Security from the menu.
    3. Assign Full Access to the Everyone and System group if not already assigned. If there are any other groups without Full Access, assign them the same access as well.
    4. Then delete this key.
    5. Follow procedures a-d for CurrentControlSet1 and CurrentControlSet2 as required. The Miniport should be in the same location in the subfolders.
    6. Follow same procedure for HKLM\SYSTEM\CurrentControlSet\Services\nfpkfltr adding Full Control where required to remove the keys completely. 
    7. To confirm they have been removed open Device Manager and select Show Hidden Devices, they should all be gone completely.
    8. Restart the server before re-installing and verify the keys have been removed from Device Manager.

How to Install the SolarWinds Orion Failover Engine Packet Filter

  1. Stop the SolarWinds Orion Failover Engine services and set Neverfail Server R2 service to manual for the duration of this procedure. 
  2. From a command prompt change the directory to C:\Program Files\SolarWinds\FoE\r2\bin.
  3. Run: nfpktfltr install "\SolarWinds\FoE\r2\drivers\nfpktfltr\"
  4. Select Yes to all the unsigned driver windows. (You may or may not see these).
  5. Clear the check box for the filter from on the SolarWinds Channel NICs.
  6. Recreate the teamed NICs using the vendor supplied software. 
    Note: If the server does not use teamed NICs, please disregard this instruction.
  7. Restart the server after installing the drivers.
  8. Once the server has restarted, check the packet filter configuration with the commands getfilter and getstate (the servers should respond with PassThru on the active server and Filter on the passiver server) and getloadstate (the servers should respond with Filter on both the active and passive servers.
  9. Reconnect the principal network cable if installing on passive server.
  10. Set the Neverfail Server R2 service to automatic again and start SolarWinds Orion Failover Engine.
  11. If required, perform a series of test switches primary to secondary and then secondary to primary again. This will prove the packet filter is installed and operational.

 

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