For the best experience using Office 365, we recommend that you upgrade to the latest version of Internet Explorer.

Office 365 is designed to work with the current or immediately previous version of Internet Explorer. Office 365 might continue to work with versions of Internet Explorer other than the current and immediately previous versions for some time after the release of a new version of Internet Explorer, but Office 365 cannot provide any guarantees. 

When accessing Office 365 from older versions of Internet Explorer, users may experience known issues and limitations depending on the versions of Internet Explorer. For example, accessing Office 365 from Internet Explorer 8 might result in a substantially diminished user experience when sending and receiving email with Outlook Web App. Office 365 does not offer code fixes to resolve problems you encounter when using the service with Internet Explorer 8, and new Office 365 experiences might not work at all. You should also expect the quality of the user experience with Internet Explorer 8 to diminish further in the near future. 

Do you have websites that still require or work best with older versions of Internet Explorer? Learn more about the new Internet Explorer 11 Enterprise Mode at http://technet.microsoft.com/en-us/library/office-365-system-requirements.aspx#BKMK_Web_Browsers 

Web browsers: Internet Explorer 

Office 365 is designed to work with the current or immediately previous version of Internet Explorer. We recommend that you upgrade to the latest version of Internet Explorer after it is released. Office 365 might continue to work with versions of Internet Explorer other than the current and immediately previous versions for some time after the release of a new version of Internet Explorer, but Office 365 can’t provide any guarantees. 

When accessing Office 365 from older versions of Internet Explorer, users may experience known issues and limitations depending on the versions of Internet Explorer, including:

Internet Explorer 9 Office 365 does not offer code fixes to resolve problems you encounter when using the service with Internet Explorer 9. You should expect the quality of the user experience to diminish over time, and that many new Office 365 experiences might not work at all. 

Internet Explorer 8 - The user experience sending and receiving email with Outlook Web App and Internet Explorer 8 might be substantially diminished, especially when used on Windows XP or with low memory devices. Office 365 does not offer code fixes to resolve problems you encounter when using the service with Internet Explorer 8, and new Office 365 experiences might not work at all. You should also expect the quality of the user experience with Internet Explorer 8 to diminish further in the near future. Beginning in May 2014, Internet Explorer 8 will only display Outlook Web App Light. If you are an Office 365 admin, you will see a notification of this change in the Message Centre in the Office 365 admin centre 30 days before the change takes place. 

If your organisation is dependent upon Internet Explorer 8 to access older Web apps and services, you may want to consider upgrading to Internet Explorer 11 and evaluating Enterprise Mode for Internet Explorer 11. This update helps provide better backward compatibility for legacy Web apps.