Microsoft announced on Thursday that itll deprecate the classic Exchange Admin Center management portal on June 20, 2023. Microsoft described it as a final deprecation for the older Exchange Admin Center product. It means that starting June 21, 2023, the classic EAC will no longer be functional for WW customers, per the announcement. Microsoft defines deprecation here . It seems to mean that further development of a software feature by Microsoft will stop. This classic Exchange Admin Center

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