Filter Discovery Might Be Blocked by Security Restrictions

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Summary

This Knowledgebase article details a known issue regarding automatic updates on the Neverfail filters list.


More Information

The Filter Discovery component runs every two minutes (by default) and checks for the new data that should be protected (e.g. new SQL databases when the Neverfail for SQL is installed).

If new data specific to the protected application is found in another location that is not covered by the current Neverfail filter, the Filter Discovery component will add a new filter automatically.

Security restrictions present on a server pair protected by Neverfail might prevent the Filter Discovery from running correctly. As a result, new filters may not be added when application specific data is added in different folders outside the locations currently protected by Neverfail.

The Filter Discovery might be locked in the "Executing" phase because of a hidden pop-up window that expects user intervention to accept or decline the execution of the program. Therefore, the currently executing process should be terminated manually. To terminate the process:

  1. Open the 'Processes' tab of the Task Manager window.
  2. Select the 'cscript.exe' (running under the SYSTEM account) process and click the End Process button to terminate the process.

To prevent security restrictions on the Filter Discovery, perform the steps below:

  1. Ensure that the cscript.exe process called by Neverfail filterdiscovery.vbs is terminated.
  2. If present, terminate the discoverFilter<appname>.exe
  3. Open the '<install_directory>\R2\bin' folder in an explorer window.
  4. Right-click each of the files listed below and choose 'Properties' and then click on the 'Unblock' button from the 'Properties' window.

    discoverFilter<appName>.exe
    updatefilters.vbs
    nfappendfilefilters.exe
    nfremovefilefilters.exe

    Note: Each of the files must be unblocked separately.
  5. Repeat the procedure on the other server in the pair as this procedure must be performed on both servers.

Applies To

All Versions


Related Information

None

KBID-1273

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