Prefix: Tutorials

Collection of tutorials, blog posts and other content suggested for Prefix users: Video: A Quick Tour of Prefix Blog: The Best Log Viewer in the Universe Blog: Finding Hidden Exceptions in Your Application with Prefix Blog: How to View Any SQL Query in Your Application with Prefix Prefix Premium Features: Blog: How to Use Prefix to Troubleshoot Remote HTTP Calls …

Troubleshoot: Common Azure App Service Issues

Below are common Azure App Service issues. ‘StackifyHttpTracer’ Not Found If you encounter the error “Could not load file or assembly ‘StackifyHttpTracer’ or one of its dependencies. The system cannot find the file specified.”, download and install our NuGet package that will install the module into your project: Nuget: Stackify Http Module Using the “WEBSITE_LOCAL_CACHE_OPTION” Azure Setting We can’t support APM …

Troubleshoot: APM+ for .NET

This guide is intended to help users who are experiencing problems trying to configure their application to send APM data to Retrace.  If you haven’t already, check out our documentation on installing Retrace for your appropriate application framework.  This guide will provide you with a checklist of items that will help troubleshoot what is going on.  If you are still not …

Prefix: Missing ASP.NET Module Names

Prefix can automatically track the names of your ASP.NET HTTP modules. This can be very useful for troubleshooting performance problems caused by a module. If you do not see module names as shown in the image below, you may need to make a config change to your computer. To collect the names of your modules, the Stackify profiler requires that Tracing …

Troubleshoot: Adding Exceptions to a Firewall

The following service endpoints are firewall exceptions that your server may need for the Retrace agent to work correctly on your network.  The preference is to allow the domain name because the IP addresses listed below are subject to change without notification. These endpoints or IP addresses need to explicitly have port 443 (outbound) allowed: Agent-Related Networks Domain IP Address TCP Ports s1.stackify.com 138.91.73.204  443 …

Azure Installation: Configure Azure App Services

Retrace’s powerful web application performance monitoring (APM+) is fully supported on Azure Web Apps. All APM related features are supported, such as identifying slow web pages, slow database queries, and viewing complete method level profile traces. Note: Some basic monitoring features like monitoring IIS metrics, WMI, and performance counters are not supported via Microsoft, and therefore not supported by Retrace. …

Prefix: Basic Troubleshooting

First Steps: Follow these steps to ensure the Prefix profiler has started & is attached to your app: Restart your PC. From the tray app, right click on it and click “Disable Profiler” then “Enable Profiler” once it stops. Start Visual Studio as an administrator. Debug your application as normal. If that process doesn’t work, please read below. Verify if …