Azure DevOps Organization Missing?

If your Azure DevOps Organization is missing then it may be due to either of the reasons noted below! Either you might not have access to those organization (or) you might be trying to access the organization from different tenant or active directory. There are also other reasons due to which you may lose access to your organization

Access to the organization: Reach out to your Azure DevOps Organization Administrator and ask for access

Accessing from different tenant: Make sure your are accessing the Azure DevOps from the right tenant. Check with your team members to see on which tenant you should be accessing the Azure DevOps organization

If you were the Project Collection Administrator of Azure DevOps: If none of the above reasons solves your problem, then you might need to reach out to Microsoft to get more help on this. This is because sometimes you might lose access to your organization when you move to a different tenant