Finding a Correlation ID using Fiddler

When working with SharePoint it’s inevitable that at some point you will come across a Correlation ID on your screen! These are invaluable for tracking down issues when you’re building new functionality – and are handily displayed in the onscreen error messages so that they can be plugged into ULS Viewer to track down the root cause…

However, what if there’s an issue that you want to track down that doesn’t result in the error message being displayed? E.g. perhaps something isn’t firing when it should and you need to track down this “non-event”.

Well, thanks to a little trick gleaned from working with the talented Jaap Vossers, I’ve seen that this is easy to do! Fiddler is an invaluable tool for all web development, and SharePoint is no exception. What is really useful in this scenario is that SharePoint returns the Correlation ID as a HTTP response header – as you can see in the screenshot below the SPRequestGuid is what we’re after.

Fiddler Correlation ID

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