Microsoft will shut down Exchange Web Services in Exchange Online in October 2026 September 19, 2023 by admin Tweet Microsoft was not releasing feature updates for Exchange Web Services in Exchange Online and now says it will block EWS requests from non-Microsoft apps to Exchange Online starting Oct. 1, 2026. Read more… Neowin Related Posts:With Basic Auth in Exchange Online dead, this is…PSA: Microsoft is deprecating Basic Auth in Exchange…Microsoft is killing off Basic Auth in Exchange…Microsoft will disable Basic Auth for Exchange…Google warns of configuration change for interop…