Configuration error - Server Error in '/Suite' Application

FlexNet Manager Suite 2025 R1 (On-Premises)

Description—An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

• This issue typically arises when a Flexera process is active during an upgrade.
• The error message “Server Error in '/Suite' Application” appears when verifying that batch processor services are running.
• The error is only visible when accessing FlexNet Manager Suite in localhost; it does not appear when accessing from other devices.

Important: All Flexera related processes should be stopped prior to upgrading, except for IIS.

Resolution Steps

Identify the Installed DLL Version—Use the following PowerShell command to determine the version of the DevExpress.Web DLL currently installed. Adjust the file path if necessary:

([System.Reflection.Assembly]::LoadFile("C:/Program Files (x86)/Flexera Software/FlexNet Manager Platform/WebUI/bin/DevExpress.Web.Mvc5.v23.1.DLL")).FullName

Update the Web.config File—Manually update the Web.config file with the correct version information for the DevExpress.Web DLL identified in the previous step.

Reset IIS—After updating the configuration file, perform an IIS reset to apply the changes before accessing the FlexNet Manager Suite Web UI.