When I go to ACS Management portal:
https://[SERVICE_BUS].accesscontrol.windows.net/v2/mgmt/web/ServiceIdentity/EditKey/{xxx}
And try to generate a new key for owner
I get the message that the DATE is not valid.
Portal in shown in GERMAN, where the date is represented in format "DD.MM.YYYY", which WEB FORM VALIDATOR rejects.
If I put "MM.DD.YYYY" validator accepts it but SERVER SIDE CHECK expects EUROPEAN format and rejects it.
That sucks, fix this.