Quick fix for Formula.Firewall issues in Power Query and Power BI

Formula.Firewall issues can hit you when designing your queries or even “out of the blue” when suddenly refreshes in the service are failing due to changes in the query evaluation. You will find a lot of methods published on the internet which are good and cover different scenarios. But there is also a very quick … Read more

Transforming multiple columns at once with reference to existing column in Power Query

In this article I’m going to present a method about transforming multiple columns at once in a fast way. This method also allows you to reference columns that exist in your table already. As I have described in a previous article, this cannot be done using the native Table.TransformColumns function that will be applied if … Read more

Fix error “..prod.powerquery.microsoft.com refused to connect” in Power BI dataflows

Today I could not edit any dataflows for a client and was constantly getting “… prod.powerquery.microsoft.com refused to connect”:   Twitterverse to the rescue After a couple of unsuccessful trials I went to the twitterverse to ask around if anyone else was experiencing the same (thinking that there was an issue with the service in … Read more