Network Management

SolarWinds Platform Web Console fails to load with “Could not load file or assembly 'Microsoft.Extensions.Logging.Abstractions'” error

This article discusses an issue when loading the SolarWinds Platform Web Console, you may see the error “Could not load file or assembly 'Microsoft.Extensions.Logging.Abstractions'” due to a version mismatch between .NET assemblies used by SolarWinds.

First published date

11/12/2025 9:06 PM

Last published date

11/12/2025 9:12 PM

Overview

When attempting to load the SolarWinds Platform Web Console, users may encounter a “Server Error in '/' Application” message. The error details indicate that the application cannot load the assembly Microsoft.Extensions.Logging.Abstractions, resulting in a version mismatch between assemblies.

This issue prevents the SolarWinds Platform Web Console from loading properly.

Product section

Network Performance Monitor

Resolution

To resolve this issue, rebuild the SolarWinds Platform Website to ensure all required assemblies and configuration files are synchronized.

Rebuild the SolarWinds Platform Website

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