Article ID: 2871314 - View products that this article applies to.
Users in an on-premises Exchange Server 2013 environment or in Office 365 who use Internet Explorer 8 to access Outlook Web App experience slow performance when they perform common tasks such as the following:
We strongly recommend that users upgrade to the latest version of Internet Explorer.
For more info if you have Office 365, see Office 365 Client system requirements policy
(http://community.office365.com/en-us/wikis/manage/office-365-client-system-requirements-policy.aspx). Microsoft will continue to support Internet Explorer 8 and Office 365. However, the user experience and support experience will be limited. Users may experience limitations in the Exchange Online service when they use Internet Explorer 8. For more information, see Frequently Asked Questions about Office 365 and Internet Explorer
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 Web App.
To set up the light version of Outlook Web App for all users in your Office 365 organization
At this point, all users in the Office 365 organization who use Outlook Web App will be presented with the Outlook Web App light experience. Users won't be able to switch to the Outlook Web App premium experience until the admin reverts the changes that were made to the Outlook Web App policy in the Exchange Admin Center.
To set up the light version of Outlook Web App for one user in your Office 365 organization
Office 365 requires the current version or the immediately preceding version of Internet Explorer, or the latest release of Google Chrome, Mozilla Firefox, or Apple Safari. For more information about Outlook Web App and Internet Explorer 8, see Office 365 and Internet Explorer 8
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.
Still need help? Go to the Office 365 Community
(http://community.office365.com/)website or the Exchange TechNet forums
Article ID: 2871314 - Last Review: July 13, 2014 - Revision: 8.0