Looking at the user stories/customer stories over at dotnet.microsoft.com/platform/customers, I discovered that approx. half of them lead to 404 pages.
E. g.:
and possibly others. They all end on a page stating:
The customer story you are looking for is no longer available.
My suggestion is to either fix the dead links or remove the user stories.
Thank you for reporting. I've sent an email asking for this to be investigated.
This is now resolved. Many thanks for reporting it.
Thanks everyone