Menu

  • Alerts
  • Incidents
  • News
  • APTs
  • Cyber Decoded
  • Cyber Hygiene
  • Cyber Review
  • Cyber Tips
  • Definitions
  • Malware
  • Threat Actors
  • Tutorials

Useful Tools

  • Password generator
  • Report an incident
  • Report to authorities
No Result
View All Result
CTF Hack Havoc
CyberMaterial
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
Hall of Hacks
  • Education
    • Cyber Decoded
    • Definitions
  • Information
    • Alerts
    • Incidents
    • News
  • Insights
    • Cyber Hygiene
    • Cyber Review
    • Tips
    • Tutorials
  • Support
    • Contact Us
    • Report an incident
  • About
    • About Us
    • Advertise with us
Get Help
No Result
View All Result
Hall of Hacks
CyberMaterial
No Result
View All Result
Home News

Microsoft Fixes Outlook Bug for 365 Users

April 28, 2023
Reading Time: 2 mins read
in News

 

 

Microsoft has resolved a bug that stopped Microsoft 365 users accessing group mailboxes and calendars in Outlook desktop clients. The affected version was released on 28 March, but the issue is being resolved via the roll-out of the latest version of Outlook, which can be installed by users via the update option.

The problem, which stemmed from a code authentication regression issue, was flagged under EX540503 in the Microsoft 365 admin center.

To solve the issue, Microsoft has recommended that affected users switch to using Outlook Web Access or revert to the previous version of Outlook Desktop. However, the company advised customers to disable updates to ensure that they do not return to the faulty version.

Microsoft also shared a temporary workaround that would enable users to access their email and group calendars while the company fixed the problem. The company noted that the problem was limited to a small number of users on versions 16.0.16222.10000 or higher, but this was likely an underestimate, given the number of user reports received.

This fix represents a welcome move from Microsoft, as it ensures that Microsoft 365 users can once again access group mailboxes and calendars on their Outlook desktop clients. It also offers users clear guidance on how to update their systems and how to avoid reverting to the problematic version.

Microsoft’s advice to disable updates is particularly helpful, as it prevents users from being inadvertently returned to the version that caused the problem in the first place.

Reference:
  • Microsoft 365 group users may be unable to view or access group calendars and email messages in Outlook Desktop

Tags: April 2023AuthenticationCyber NewsCyber News 2023MicrosoftMicrosoft 365Microsoft Outlook
ADVERTISEMENT

Related Posts

FBI Food Safety Symposium in Nebraska

FBI Seizes $2.4M from Ransomware Gang

July 30, 2025
FBI Food Safety Symposium in Nebraska

FBI Food Safety Symposium in Nebraska

July 30, 2025
FBI Food Safety Symposium in Nebraska

Poland Trials 32 for Pro-Russian Sabotage

July 30, 2025
Internet Archive Becomes Federal Depository

Internet Archive Becomes Federal Depository

July 29, 2025
Internet Archive Becomes Federal Depository

UP STF Busts Digital Arrest Gang in Thane

July 29, 2025
Internet Archive Becomes Federal Depository

Linux released version 6.16

July 29, 2025

Latest Alerts

Atomic macOS Stealer Adds Backdoor

Fake Error Pages Spread Malware

FBI, CISA Warn on Scattered Spider

Phishing Targets Belgian Grand Prix Fans

Gaming Mouse Software Spreads Xred Malware

macOS Flaw Bypasses TCC, Exposes Data

Subscribe to our newsletter

    Latest Incidents

    Orange, France’s Top Telecom, Hacked

    Lovense App Leaks User Emails

    Curaçao Tax Systems Hit by Ransomware

    Cathay Apologizes Over Asia Miles Breach

    Pro‑Ukraine Hackers Hit Aeroflot Servers

    GitHub Outage Disrupts Global Core Services

    CyberMaterial Logo
    • About Us
    • Contact Us
    • Jobs
    • Legal and Privacy Policy
    • Site Map

    © 2025 | CyberMaterial | All rights reserved

    Welcome Back!

    Login to your account below

    Forgotten Password?

    Retrieve your password

    Please enter your username or email address to reset your password.

    Log In

    Add New Playlist

    No Result
    View All Result
    • Alerts
    • Incidents
    • News
    • Cyber Decoded
    • Cyber Hygiene
    • Cyber Review
    • Definitions
    • Malware
    • Cyber Tips
    • Tutorials
    • Advanced Persistent Threats
    • Threat Actors
    • Report an incident
    • Password Generator
    • About Us
    • Contact Us
    • Advertise with us

    Copyright © 2025 CyberMaterial