Microsoft fixes Exchange Online outage affecting users worldwide:

bleepingcomputer.com/news/microsoft/microsoft-october-windows-server-updates-cause-exchange-issues/

Credibility A−

Oct 19

Microsoft: October Windows Server updates break Exchange sign-in, mail flow: Microsoft has confirmed that this month's Windows Server security updates are ...

winfuture.de/news,162024.html

13 4

WinFuture.de Oct 18

No more updates: Support ends for many Microsoft products in October: Support ended for several Microsoft products on October's Patch Tuesday ...

theregister.com/saas/2026/10/13/microsoft-celebrates-end-of-office-2021-ltsc-with-ms-365-outage/5302848

dlvr.it Oct 13

Microsoft celebrates end of Office 2021 LTSC with MS 365 outage: So how's that cloud migration working out for German and UK users?

bleepingcomputer.com/news/microsoft/exchange-online-outage-causes-email-delays-server-busy-errors/

Sep 04

Exchange Online outage causes email delays, 'Server busy' errors: Microsoft is working to resolve an ongoing Exchange Online outage that is delaying ...

computerworld.com/article/4216867/microsoft-365-outage-enters-second-day-as-search-disruptions-persist.html

Computerworld Sep 01

Microsoft 365 outage enters second day as search disruptions persist: Microsoft has restored much of Exchange Online mail flow but continues working to fix ...

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bleepingcomputer.com/news/microsoft/microsoft-exchange-online-outage-causes-email-failures-auth-issues/

Aug 31

Microsoft Exchange Online outage causes email failures, auth issues: Microsoft is investigating a widespread service issue causing authentication issues ...

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7 11

Mashable Sep 01

Microsoft acknowledges widespread Exchange Online problems: Initially reported as an Outlook problem, Microsoft says its Exchange Online service has been ...

mashable.com/tech/microsoft-responds-exchange-online-outlook-outage-aug-31

bleepingcomputer.com/news/microsoft/microsoft-exchange-online-outage-causes-email-delays-failures/

Jun 02

Microsoft Exchange Online outage causes email delays, failures: Microsoft is working to address a widespread service issue affecting the mail flow pipeline for ...

cnet.com/news-live/is-microsoft-outlook-down-microsoft-april-27-2026/

CNET

B+

Apr 28

Microsoft Outlook's Outage Is Fixed, but You May Have to Log Back In: If you're on iOS, you might have to take some steps to get connected again after ...

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3 1

bleepingcomputer.com/news/microsoft/new-exchange-online-virtual-account-blocks-email-access-via-mobile-mac-apps/

Mar 23

Microsoft Exchange Online service change causes email access issues: Microsoft is working to address an ongoing service issue that has intermittently prevented ...

6 3

bleepingcomputer.com/news/microsoft/microsoft-exchange-online-outage-blocks-access-to-mailboxes/

Mar 16

Microsoft Exchange Online outage blocks access to mailboxes: Microsoft is working to address an ongoing Exchange Online outage that is preventing customers from ...

cnet.com/tech/is-microsoft-down-outlook-and-teams-go-dark-in-widespread-outage/

5 18

CNET

B+

Jan 23

'Is Microsoft Down?' Outlook and Teams Go Dark in Widespread Outage: It's not just you: Numerous Microsoft services weren't working for most of Thursday.

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0 0

bleepingcomputer.com/news/microsoft/microsoft-exchange-online-outage-blocks-access-to-outlook-mailboxes/

Nov 25 25

Microsoft: Exchange Online outage blocks access to Outlook mailboxes

1 4

bleepingcomputer.com/news/microsoft/microsoft-shares-workaround-for-teams-couldnt-connect-error/

Aug 19 25

Microsoft shares workaround for Teams "couldn't connect" error: Microsoft is resolving a known issue that causes "couldn't connect" ...

metro.co.uk/2025/07/10/microsoft-outlook-goes-users-unable-access-emails-23625706/

4 2

Metro

D+

Jul 10 25

Microsoft Outlook goes down with users unable to access emails: Nearly 200 outages have been reported since 5am, with Outlook email also affected.

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bleepingcomputer.com/news/microsoft/microsoft-links-dns-issue-to-exchange-online-otp-delivery-failures/

Jul 02 25

Microsoft: DNS issue blocks delivery of Exchange Online OTP codes: Microsoft is working to fix a DNS misconfiguration that is causing one-time passcode (OTP) ...

neowin.net/news/outage-hits-microsoft-365-services-again-as-teams-outlook-and-more-go-down/

1 0

neowin.net

May 06 25

Outage hits Microsoft 365 services again as Teams, Outlook, and more go down: Microsoft has confirmed that M365 services have gone down. The company is ...

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