All news with #outlook tag

Microsoft: New Outlook Fails to Open Some Excel Attachments

🔧 Microsoft is addressing a bug that prevents some users from opening Excel email attachments in the new Outlook client when filenames contain non‑ASCII characters. The company says the root cause is a missing encoding in the file‑open requests and that a fix has been developed and deployed for validation. While the rollout is still in progress, affected users are advised to use Outlook on the web or download the file to open it locally as a temporary workaround.

Exchange Online outage prevents classic Outlook access

⚠️ Microsoft is investigating an Exchange Online outage (incident EX1189820) preventing customers from accessing mailboxes via the classic Outlook desktop client, with reports of server connection and login failures. The company says impact is specific to users in Asia Pacific and North America and has classified the event as an incident in the admin center. As a workaround, affected users are advised to use Outlook on the Web while Microsoft analyzes the issue.

Microsoft fixes bug blocking classic Outlook startup

🛠️ Microsoft has implemented a fix for a major issue that prevented some Microsoft 365 customers from launching the classic Outlook client on Windows. Affected users reported errors indicating the app could not be started, the Outlook window would not open, or Exchange sign-in failed. Microsoft marked the incident as fixed and said the Outlook team is monitoring the rollout, while recommending Outlook Web Access or the new Outlook for Windows as temporary workarounds.

Microsoft Outlook stops displaying inline SVG images

🔒 Microsoft will no longer display inline SVG images in Outlook for Web and the new Outlook for Windows; users will instead see blank spaces where those images would have appeared. The global rollout began in early September 2025 and is expected to complete by mid‑October 2025, with Microsoft estimating the change will affect less than 0.1% of images. SVG files sent as classic attachments will continue to be viewable from the attachment well to limit user disruption.

Microsoft: Classic Outlook Crash Requires Support Ticket

🔧 Microsoft is investigating a known issue that causes classic Outlook on Windows to crash at launch for some Microsoft 365 customers. The vendor has not provided a public fix; affected customers must open a support case in the Microsoft 365 Admin portal so Exchange Online support can request a service change. Microsoft notes the error can stem from different causes but recent cases have involved user mailboxes, and it recommends capturing a Fiddler trace for triage. Temporary workarounds include using new Outlook for Windows or Outlook Web Access until mitigation is applied.

Microsoft temporary fix for Outlook encrypted errors

🔧 Microsoft is investigating a known issue that prevents users of the classic Outlook for Windows from opening OMEv2-encrypted emails sent from a different organization, producing the error message "Configuring your computer for Information Rights Management." As a temporary workaround, administrators can either exclude external users from Conditional Access requirements or enable cross-tenant trust for MFA claims in the Microsoft Entra admin center. Enabling cross-tenant trust is the recommended and easiest option, but both sending and receiving tenants must apply it for full cross-tenant compatibility.