Trapping HTTP Error Codes In Power BI

Chris Webb shows how to handle specific HTTP error codes when using the Web.Contents() function in M:

This thread on the Power Query forum suggests it’s something to do with lazy evaluation, but I haven’t been able to determine the situations when it does work and when it doesn’t.

Instead, it is possible to handle specific HTTP error codes using the ManualStatusHandling option in Web.Contents()

I guess this beats not being able to handle errors at all, but it seems like a fairly fragile solution if you next want to start handling the entire 500 class of response codes.

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