New Outlook use excessive memory after last update

Question

Hi

After the last update of the NEW Outlook, the software has started to use excessive memory. When starting the software it uses about 600-750MB of RAM. After a while (varies between 30-60 minutes) it significantly increases spent memory almost tenfold. I've seen 6,5-7GB RAM in use without any proper reason to why.

I have Microsoft Outlook Version 1.2024.1002.100 (Production). Client Version is 20241004002.11.WebView2 Version is 129.0.2792.79.

I've seen reports of the same thing here: New Outlook freezes with high RAM usage | Windows 11 Forum (elevenforum.com)

Answer 1

Dear AndreasLy,

Good day! Thank you for posting in the Microsoft Community.

Please note that there is a Microsoft service incident with an incident number MO907654 and the product development team is working on a fix. You can check out the incident detail below:

Title: Some users in Europe may encounter performance issues with their Outlook client

User impact: Users in Europe may encounter performance issues with their Outlook client.

More info: Users may notice Outlook using an increased amount of resource utilization, causing the client to freeze or crash.

Current status: Following further investigation, we have determined that Outlook on the web is likely not a viable workaround for most organizations affected by this issue. As a result, we have removed this guidance from our communications. We understand the impact this issue has on affected organizations and are actively working on alternative solutions while our engineering teams focus on resolving the problem. This quick update is designed to give the latest information on this issue.

Scope of impact: Impact is specific to some users who are served through the affected infrastructure.

Start time: Oct 10, 2024, 4:59 PM GMT+8

For affected customers to easily identify the information here, you can subscribe to this thread or check SHD for up-to-date information. I'll also repost here once the issue is resolved.

https://admin.microsoft.com/Adminportal/Home#/servicehealth/:/alerts/MO907654

Thank you in advance for your kind understanding! Your patience and cooperation will be greatly appreciated. Have a nice day!

Sincerely

Libeamlak | Microsoft Community Moderator

Answer 2

Dear AndreasLy,

Good day! Hope you are doing well!

Regarding the above incident MO907654, it has been restored on Oct 11, 2024, 1:05 AM. You can check out the incident restore status detail below:

Current Status: After monitoring and addressing the issue with affected customers, we are confident that it has been fully resolved. For users still experiencing difficulties, please follow the guidance in the “Resolution Steps” section.

User impact: Users may have encountered performance issues with various Outlook clients.

More info: Users may have noticed that Outlook was consuming higher-than-normal system resources, affecting all Outlook connection methods, including the desktop client and Outlook on the web.

Resolution steps: This issue has been resolved; however, affected users may need to take specific actions to apply the changes:

Outlook Client and App users: Please restart the Outlook client or app. Desktop users may need to restart twice due to caching.

Outlook on the Web users: Refresh your session. If issues persist, clear your browser cache and refresh the session again.

Scope of impact: The primary impact was on the Outlook client, though users on any connection method, including Outlook on the web and mobile apps, may have been affected.

Preliminary root cause: A separate service-impacting event caused an issue retrieving policy data. This caused Outlook users to experience high system memory usage, which resulted in poor performance and crashes.

Next steps

• We're reviewing the root cause to implement measures to prevent similar issues in the future.

A preliminary Post-Incident Report will be provided within two business days, with a final report following within five business days.

Therefore, May I please double confirm if you are still experiencing same issue as before?

I look forward to your update. If you have any other question or need further assistance, please feel free to let me know.

Thanks for your precious time. Have a nice day! 

Sincerely,

Libeamlak | Microsoft Community Moderator