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Home > Success Center > Network Performance Monitor (NPM) > Network Atlas error: Connection to the Information Service has been lost and could not be established

Network Atlas error: Connection to the Information Service has been lost and could not be established

Created by Erica Gill, last modified by MindTouch on Jun 23, 2016

Views: 188 Votes: 3 Revisions: 5


The following error is shown when attempting to open maps in the Network Atlas application and the maps cannot be opened:

Connection to the Information Service has been lost and could not be established.


The following error is also shown in C:\ProgramData\Solarwinds\InformationService\v3.0\Orion.InformationService.log:

2056-01-13 03:51:21,230 [15] ERROR SolarWinds.InformationService.Core.InformationService - (null)     Exception caught in method Invoke
SolarWinds.InformationService.Verb.VerbExecutorException: Verb Orion.MapStudioFiles.GetMapStyle: Cannot find assembly
   at SolarWinds.InformationService.Verb.VerbExecutor.EnsureCached(VerbExecutorContext verbExecContext)
   at SolarWinds.InformationService.Verb.VerbCache.GetVerbContext(String entity, String verb, VerbExecutor& executor, VerbExecutorContext& context)
   at SolarWinds.InformationService.Core.InformationService.InvokeInternal[T](String entity, String verb, Action`1 setupParameters, Func`2 extractReturnValue)
   at SolarWinds.InformationService.Core.InformationService.Invoke(String entity, String verb, XmlElement[] parameters)               

NetworkAtlas log

2056-01-13 04:25:21,230 [Main Window UI thread] FATAL MapEngine - Connection is in faulted state
System.ServiceModel.FaultException`1[SolarWinds.InformationService.Contract2.InfoServiceFaultContract]: Invoke failed, check fault information. (Fault Detail is equal to SolarWinds.InformationService.Contract2.InfoServiceFaultContract).
2015-12-22 16:13:10,319 [Main Window UI thread] FATAL NetworkAtlas - UNHANDLED EXCEPTION CAUGHT ON UI THREAD.
2015-12-22 16:13:10,319 [Main Window UI thread] FATAL NetworkAtlas - Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
2015-12-22 16:13:10,319 [Main Window UI thread] FATAL NetworkAtlas - Data: System.Collections.ListDictionaryInternal
2015-12-22 16:13:10,319 [Main Window UI thread] FATAL NetworkAtlas - TargetSite: IntPtr CallWindowProc(IntPtr, IntPtr, Int32, IntPtr, IntPtr)
2015-12-22 16:13:10,334 [Main Window UI thread] FATAL NetworkAtlas - StackTrace:    at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
   at System.Windows.Forms.Control.DefWndProc(Message& m)
   at System.Windows.Forms.AxHost.WndProc(Message& m)
   at SolarWinds.MapEngine.MapEditor.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
2056-01-13 04:25:21,230[Main Window UI thread] FATAL NetworkAtlas - Source: System.Windows.Forms  


NPM 11.5.2 and earlier


The SolarWinds Information Service is in an inconsistent state and cannot find a DLL.


  1. Stop all Orion services.
  2. Repair the following services. Refer to the Repair a program section in Uninstall, change or repair a program.
    • SolarWinds Information Server Vxxxx.x.xxxx
    • SolarWinds Orion Network Atlas Vx.xx.xx
  3. Start the Orion services.

Verify that the issue is cleared and that maps can again be viewed in the Network Atlas.


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