Network Management

A blocked file prevents SolarWinds from working properly

If you encounter issues with Orion after installing a hotfix and you see the following error in the logs, you will need to unblock the file listed in the error. Depending on what file is blocked, certain parts of NPM may not function properly. The following error means Orion cannot access a file that exists in the install directory. Example of the error seen in logs: "ERROR SolarWinds.Orion.Core.BusinessLayer.CoreBusinessLayerService - Unhandled exception occured when rescheduling discovery jo

First published date

11/27/2018 11:48 PM

Last published date

11/27/2018 11:48 PM

Overview

If you encounter issues with Orion after installing a hotfix and you see the following error in the logs, you will need to unblock the file listed in the error.

Depending on what file is blocked, certain parts of NPM may not function properly. The following error means Orion cannot access a file that exists in the install directory.

Example of the error seen in logs:

"ERROR SolarWinds.Orion.Core.BusinessLayer.CoreBusinessLayerService - Unhandled exception occured when rescheduling discovery jobs

System.Exception: Unhandled exception occurred during loading assembly [SolarWinds.Orion.Core.DiscoveryPlugin] ---> System.IO.FileLoadException: Could not load file or assembly '<file:///D:\ProgramFiles\SolarWinds\Orion\SolarWinds.Orion.Core.DiscoveryPlugin.dll>' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) ---> System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See  for more information.

   --- End of inner exception stack trace ---

This can happen to any Orion core product, typically after a hotfix is installed.

Product section

Orion Platform

Cause

This can happen when you download a file from the internet, or transfer it from one machine to another before installing.

http://en.wikipedia.org/wiki/Code_Access_Security (Wikipedia® , available at en.wikipedia.org, obtained on November 27, 2018)

Resolution

Navigate to the file listed in the error message.
Right-click the file > Properties > Unblock > OK.
Restart services and check the logs again to see if the issue has been fully resolved.

Example:

Note: If the file is not blocked, you will not see an 'Unblock' button.

Disclaimer: Please note, any content posted herein is provided as a suggestion or recommendation to you for your internal use. This is not part of the SolarWinds software or documentation that you purchased from SolarWinds, and the information set forth herein may come from third parties. Your organization should internally review and assess to what extent, if any, such custom scripts or recommendations will be incorporated into your environment. You elect to use third-party content at your own risk, and you will be solely responsible for the incorporation of the same if any.