Slow Outlook on the web performance when accessed through Internet Explorer 8
Users in an on-premises Exchange Server environment or in Office 365 who use Internet Explorer 8 to access Outlook on the web (formerly known as Outlook Web App [OWA]) experience slow performance when they perform common tasks such as the following:
- Read new mail
- Send and receive mail
- Select recipients from the global address list (GAL)
- Select folders
We strongly recommend that users upgrade to the latest version of Internet Explorer.
For more info if you have Office 365, see System requirements for Office. Microsoft will continue to support Internet Explorer 8 and Office 365. However, the user experience and support experience will be limited.
If you can't upgrade to the latest version of Internet Explorer and must continue using Internet Explorer 8, use the light version of Outlook on the web.
To set up the light version of Outlook on the web for all users in your Office 365 organization
- Sign in to the Office 365 portal (https://portal.office.com) as an admin.
- Click Admin, and then click Exchange to open the Exchange Admin Center.
- In the navigation pane of the Exchange Admin Center, click permissions, and then click Outlook Web App policies.
- Double-click OwaMailboxPolicy-Default.
- In the Outlook Web App policies dialog box, click features, clear the Premium client check box, and then click Save.
At this point, all users in the Office 365 organization who use Outlook on the web will be presented with the Outlook on the web light experience. Users won't be able to switch to the Outlook on the web premium experience until the admin reverts the changes that were made to the Outlook on the web policy in the Exchange Admin Center.
To set up the light version of Outlook on the web for one user in your Office 365 organization
- Direct the user to sign in to the Office 365 portal (https://portal.office.com).
- Click Outlook.
- Click Settings (), and then click Display Settings.
- Click Outlook Web App version, select the Use the light version of Outlook Web App check box, and then click OK.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
Article ID: 2871314 - Last Review: 01/13/2016 02:56:00 - Revision: 13.0
Microsoft Exchange Online, Exchange Server 2016 Enterprise Edition, Exchange Server 2016 Standard Edition, Microsoft Exchange Server 2013 Enterprise, Microsoft Exchange Server 2013 Standard
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