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Home > Success Center > Web Performance Monitor (WPM) > WPM - Knowledgebase Articles > WPM cannot open a new database connection using Windows Authentication

WPM cannot open a new database connection using Windows Authentication

Updated June 20, 2018



WPM is no longer functioning since changing the configuration wizard to connect to the Orion Database using Windows authentication, as supported in Orion Platform 2017.3 and later. 


The following error may appear in the SEUM Business Layer log:

ERROR SolarWinds.Orion.Common.SWEventLogging - Service was unable to open new database connection when requested.
SqlException: Login failed for user 'Domain\Username$'.
Connection string - Data Source=SQLServerHostname;Initial Catalog=SQLServerHostname;Integrated Security=True;Persist Security Info=False;Max Pool Size=1000;Connect Timeout=20;Load Balance Timeout=120;Packet Size=4096;Application Name=SolarWinds.BusinessLayerHost@do...ll;Workstation ID=SolarwindsServerHostname

WARN  SolarWinds.Orion.Common.SWEventLogging - WPM Service [HOSTNAME] Database connection verification failed


  • WPM 2.2.1
  • Orion Platform 2017.3 


WPM 2.2.1 does not support Windows Authentication for SQL Server so it cannot connect to the SQL instance when this property is selected during the configuration wizard. The SolarWinds.Orion.Common.dll in the SEUM directory contains old logic that can't handle Windows Authentication to the Orion Database


Upgrade to WPM 2.2.2, which supports Windows SQL authentication.

Alternatively, use the following workaround:

  1. Make a backup copy of the SolarWinds.Orion.Common.dll file located in the SEUM install folder: C:\Program Files (x86)\SolarWinds\Orion\SEUM
  2. Copy the SolarWinds.Orion.Common.dll file in the default Orion installation folder: C:\Program Files (86)\SolarWinds\Orion
  3. Paste the DLL into the SEUM install folder: C:\Program Files (x86)\SolarWinds\Orion\SEUM
  4. Restart Orion services.




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