Unable to do node List Resources in SolarWinds Platform (List Resources Page Not Loading)

You will find similar errors in the OrionWeb.log file that can be found in the C:\ProgramData\SolarWinds\Logs\Orion folder.

(30) ERROR ResourceTree - (null)  Unhandled exception occured when getting resource tree.
System.IO.FileNotFoundException: Could not load file or assembly 'SolarWinds.Orion.DeviceContext.Strings, Version=8.1.0.135, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
File name: 'SolarWinds.Orion.DeviceContext.Strings, Version=8.1.0.135, Culture=neutral, PublicKeyToken=null'
   at SolarWinds.Orion.DeviceContext.Common.Models.DeviceContextDiscoveryPoller.get_DisplayName()
   at ResourceTree.AddChildNodes(IDiscoveredObject discoveredObject, TreeNode parentNode, Dictionary`2 treeMapping)
   at ResourceTree.BuildTree(DiscoveredObjectTree sourceTree, Guid infoId)
   at ResourceTree.GetTreeInfo(String infoId)
 
=== Pre-bind state information ===
LOG: DisplayName = SolarWinds.Orion.DeviceContext.Strings, Version=8.1.0.135, Culture=neutral, PublicKeyToken=null
 (Fully-specified)
LOG: Appbase = file:///C:/InetPub/SolarWinds/
LOG: Initial PrivatePath = C:\InetPub\SolarWinds\bin
Calling assembly : SolarWinds.Orion.DeviceContext.Common, Version=8.1.0.135, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\InetPub\SolarWinds\web.config
LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: The same bind was seen before, and was failed with hr = 0x80070002.

Resolution 1:

• Stop all of the SolarWinds Platform Services using SolarWinds Platform Service Manager on the Main Polling Engine or the affected Additional Web Server.
• Copy the files on the path below:

• Paste the files to Inetpub/SolarWinds folder:

• Open the Command Prompt (Run as Admin) then perform IISReset.
• Start all the SolarWinds services using SolarWinds Platform Service Manager.
• Open List Resources on 1 affected node then check if the number interfaces go back to 0.

Resolution 2:

• The upgrade to 2025.2 or above also resolves the issue.