Suppose you’re using Outlook 2007, 2010, or older versions of Outlook 2013 and Outlook 2016. In that case, you’ll soon receive an alert that says your admin has blocked your Outlook version. The message reads as follows: “Your Microsoft Exchange administrator has blocked the version of Outlook that you are using. Contact your administrator for assistance“. Let’s discuss why this alert pops up in the first place and what you can do about it.
Old Office Versions Can’t Connect to Microsoft 365 Services
Starting with November 1st, 2021, the minimum version requirements for connecting Outlook to Office 365 and Microsoft 365 services changed. Microsoft no longer supports the following versions:
- Outlook 2007
- Outlook 2010
- Office 2013 versions earlier than 15.0.4971.1000
- Office 2016 versions earlier than 16.0.4600.1000.
Microsoft started rolling out the block for Outlook 2007 on November 1st. The block will affect Outlook 2010 users in the coming weeks. The safest solution is to upgrade to the latest Office version, which brings enhanced security and stability options and many new features.
However, if you’re running Office 2007 or 2010, and your device can’t run the latest Office version, consider switching to Office 2019. If you’re running Office 2013, switch to version 15.0.4971.1000 (Service Pack 1 with the October 2017 Update). If you’re using Office 2016, install version 16.0.4600.1000 (the one that includes the November 2017 Update, KB4051890).
For more information, contact your IT admin, and check Outlook’s end of support roadmap.
Outlook 2007 and 2010 Are Incompatible With Newer Features
As Microsoft explains, older Outlook versions are not compatible with the latest security features and modern authentication protocols. The company is also working on adding support for HTTP/2 in Microsoft 365, an enhanced security protocol.
As a quick reminder, Microsoft supports only the following Office versions for connecting to Microsoft 365 and Office 365 services:
- Microsoft 365 Apps for Enterprise (previously Office 365 ProPlus)
- Microsoft 365 Apps for Business (formerly Office 365 Business)
- Office LTSC 2021, and Office LTSC Professional Plus 2021
- Office 2019, and Office Professional Plus 2019
- Microsoft Office 2016, and Office Standard 2016
Starting with November 1st, 2021, Outlook 2007, Outlook 2010, and old Office 2013 and Office 2016 versions can no longer connect to Office 365 and Microsoft 365 services. That’s why you’re getting an alert that says your admin has blocked your Outlook version.
Are you planning to upgrade to a newer Office version any time soon? Let us know in the comments.