All Microsoft products have a support lifecycle which typically lasts 10 years from the date of the product`s initial release. During the lifecycle Microsoft provides consumers with new features and security updates.
Exchange 2010 was the last to host legacy public folders and on October 13, 2020 Exchange Server 2010 will reach end of support. This means no more security updates and major compliance vulnerabilities for organizations who do not move off this version of Exchange Server.
The end of extended support does not mean that your Exchange Server 2010 will suddenly stop working. Installations of Exchange 2010 will continue to run after this date. However, because of the changes listed above, we strongly recommend that you migrate from Exchange 2010 as soon as possible.
As a reminder, if Exchange Server 2010 is running on Windows Server 2008 or Windows Server 2008 R2, it's important to consider how you will obtain security updates for the underlying operating system too. Please read more about your options here .
With Exchange 2010 reaching its end of support, the only way to mitigate risks is a migration. If you haven't already begun your migration from Exchange 2010 to Microsoft 365 or Exchange 2016, now's the time to start your planning. There are two most reliable destinations:
1. Migration to Microsoft 365.
Migrating your email to Microsoft 365 is your best and simplest option to help you retire your Exchange 2010 deployment. Microsoft 365 receives new features and experiences first and you and your team can usually start using them right away. Upgrading to a new version of Exchange -- you're always on the latest version of Exchange in Microsoft 365. When choosing a migration option, you need to consider a few things like the number of seats or mailboxes you need to move, how long you want the migration to last, and whether you need a seamless integration between your on-premises installation and Microsoft 365 during the migration.
Full hybrid migrations aren't suited to all types of organizations. Due to the complexity of full hybrid migrations, organizations with less than a few hundred mailboxes don't typically see benefits that justify the effort and cost needed to set one up.
2. Migration to Exchange 2016.
If you choose to keep your email on-premises, you can migrate your Exchange 2010 environment to Exchange 2016. Exchange 2016 includes the features and advancements included with previous releases of Exchange, and it most closely matches the experience available with Microsoft 365. If you do want to stay on-premises don't forget that you cannot upgrade directly from Exchange 2010 on-premises to Exchange Server 2019 . You can upgrade to Exchange 2013 or 2016 directly from Exchange 2010 and we recommend you upgrade to Exchange 2016 if you have the choice.
If you have a complex deployment, or if you simply don't have the time or resources to dedicate to a project like this, there are plenty of ways to get help:
With Exchange Online and Microsoft 365 you'll get access to the most secure and productive software. If you migrate fully to Microsoft 365 you really don't need to worry about 'big bang' version upgrades any more. You just have to keep a much smaller number of on-premises servers up to date, and you're good.