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your microsoft exchange administrator has blocked the version of outlook that you are using contact
your microsoft exchange administrator has blocked the version of outlook that you are using contact administrator for assistance Juts checking with 2010 outlook version https://www.technipage...
There is a rolling upgrade of the Exchange system which is now onto 2010 and this will stop any connectivity from the client. Full details here: https://techcommunity.microsoft.com/t5/microsoft-365-blog/new-minimum-outlook-for-windows-version-requirements-for/ba-p/2684142
