Once you've downloaded the ISO file, you can install Exchange Server 2016 on your server. Here are the steps:

| Feature | Exchange Standard Edition | Exchange Enterprise Edition | | --- | --- | --- | | | 5 | 100 | | Mailbox database size | 1 TB (theoretical; best practice lower) | Unlimited (limited by storage) | | Supported users | Up to approx. 5,000 (variable) | Up to 10,000+ per server | | Cost | Lower | Higher | | Use case | SMB, branch offices | Large enterprises, data centers |

You can download the latest Cumulative Updates (such as CU22 or CU23 ) directly from the Microsoft Download Center . These ISO files serve as both new installation media and upgrade packages.

📥 Need the Microsoft Exchange Server 2016 ISO? Read this before you download.

If you are testing, learning, or building a lab environment, Microsoft offers a fully functional 180-day trial:

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