How to view upgrade-assistant log files

If you have upgraded to .NET 6 using upgrade-assistant, you might have noticed the log file that are produced: upgrade-assistant.clef. For my last upgrade this log file was 66,958 lines long and looked something like this.

So, how can we get something useful out of this log file? Use Compact Log Viewer, available in Microsoft Store! It makes reading CLEF (Compact Log Event Format) log files an absolute joy!

You can then easily filter out the 65,000 debug messages, keeping only warnings and errors!

That's it!