Outlook 2007 exchange admin has blocked the version

[Ianpalmerarchitects365]

This morning Outlook stopped working with the message 'Your MS Exchange administrator has blocked the version of Outlook that you are using. Contact your administrator for assistance'
I have read a few articles but its not clear, is there a simple fix or do i need to upgrade?
My Google account associated with the desk top Outlook still works, however my mail associated with 365 has stopped. Using web based 365 for mail still works
Best
Ian

[#2]

Note: Effective November 1, 2021, the following versions of Outlook for Windows (starting with Outlook 2007, in a phased rollout), will not be able to connect with Office 365 and Microsoft 365 services.

[#3]

Thank you so much!
Have a nice day

[#4]

So what do we need to do?

[#5]

@DrT353 

This is now closed out.

Many Thanks

[#6 · Accepted solution]

upgrade all 2007 versions