Can't select Availability Zone

Hi,

Regarding your query, With EC2-Classic, your instances run in a single, flat network that you share with other customers. Having said this, since this is a single network its not divided and hence there are no AZ's available to select while launching instances via the launch wizard.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-classic-platform.html  

I hope this helps.

Did that change this month? I could do it two weeks ago.

I am updating and migrating legacy systems step by step, but I still have production services in EC2-Classic mode.

It works again! It seems that it was fixed.