Outlook 365 web version displaying "Out of Memory" errors when reading emails

Question

Outlook 365 web version displaying "Out of Memory" errors when reading emails

Jeffrey Seelig 106

Has anyone else ever come across "Out of Memory" errors when reading/creating emails in the web version of Outlook 365? My company has no client software and is completely using the Office 365 version, but several times a day, users are getting these errors. A refresh usually resolves the issue, but it is a bit inconvenient when they are trying to create emails and lose all their work because of this.

Any ideas?

Yuki Sun-MSFT 41,376 Reputation points Moderator

2021-10-22T06:33:17.21+00:00

Hi @Jeffrey Seelig ,

Just checking in to follow up with this thread. Should you need more help on this, you can feel free to post back.

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Yuki Sun-MSFT 41,376 Reputation points Moderator

2021-10-22T06:33:17.21+00:00

Hi @Jeffrey Seelig ,

Just checking in to follow up with this thread. Should you need more help on this, you can feel free to post back.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 1

Yuki Sun-MSFT 41,376 Moderator

Hi @Jeffrey Seelig ,

Welcome to Microsoft Q&A! Since the "office-outlook-itpro" tag you added is dedicated to supporting issues related to Outlook desktop clients. while your issue is related to the web version of Outlook for Office 365, I'll change the tag to "office-exchange-online-itpro" instead which is more suitable for your situation.

Then regarding the "Out of Memory" error you mentioned above, please go through the link below and confirm the users are using the supported versions of browsers to access OWA:
System requirements for Microsoft 365 and Office - Browsers

Besides, it's also recommended to check the other component requirements in case the issue is due to the unsupported PC configuraton.

In addition, if the issue persists, you may try leverage lean popouts and see if it can be of some help:
Use lean popouts to reduce memory used when reading mail messages

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Jeffrey Seelig 106 Reputation points

2021-10-27T17:23:41.827+00:00

@Yuki Sun-MSFT ,

I have checked on the documents you suggested to verify minimum system requirements and my computers all meet the minimum requirements. They are Dell Optiplex's, with a minimum of an Intel i3-4130 Processor in them and they are running Windows 7 32-bit OS. They all have at least 4GB of RAM in the systems and the screen resolutions are at a minimum of 1280x768. Many of them are working on 1280x1024. They are also working with Microsoft .NET Framework 4.6 or above. Any other suggestions?
Yuki Sun-MSFT 41,376 Reputation points Moderator

2021-10-28T09:49:53.433+00:00

Hi @Jeffrey Seelig ,

Then may I know if you have had a chance to try using the lean popouts and see if there would be any improvement?

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Jeffrey Seelig 106 Reputation points

2021-10-28T13:12:59.77+00:00

@Yuki Sun-MSFT , This is a corporate environment, so lean pop outs are not a viable solution. We are utilizing the Web version of the software and the company does not want to make this change as the Exchange server would affect users outside of the U.S.
Yuki Sun-MSFT 41,376 Reputation points Moderator

2021-11-02T06:56:59.153+00:00

Hi @Jeffrey Seelig

they are running Windows 7 32-bit OS.

As Windows 7 support has ended on January 14, 2020 and noticed from this document that Windows 7 is not listed as the supported version of Operating system for Microsoft 365 services:

So if possible, please have a check to see if the users using Win 10 can have a better experience when reading messages in OWA.

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Outlook 365 web version displaying "Out of Memory" errors when reading emails

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