For those of you using Office 365 and still using Windows XP, you should by now be aware that Outlook Web App is scheduled to force Outlook Web App light from 30 June.

Starting June 30, 2014, Internet Explorer 8 will support only the light version of Outlook Web App. Changes will take effect during the weeks following June 30th.

If your organization uses Internet Explorer 8 to access older web apps and services, you might want to upgrade to Internet Explorer 11 and try Enterprise Mode for Internet Explorer 11. Enterprise Mode helps provide better backward compatibility for older web apps.

For more information we encourage you to visit our web browser guidance at the “Office 365 System Requirements” website by selecting the link below.

Office 365 System Requirements: Web Browsers

For people still in the process of migrating to Office 365 Exchange Online, you may be interested in the feature differences between Exchange 2007 / Exchange 2010 on premise Outlook Web Access, Exchange Online Outlook Web App premium and Exchange Online Outlook Web App light. Using an initial template I found on Ilse Van Criekinge’s TechNet Blog I created the following comparison.

Feature Outlook Web Access Light Exchange 2007
Outlook Web Access
Exchange Online Wave 15
Outlook Web App
Calendar: Create Appointments Available Available Available
Calendar: Create Meeting Requests Available Available Available
Calendar: Open a shared calendar Not available Not available Available
Calendar: Share a calendar Not available Not available Available
Calendar: View Daily Available Available Available
Calendar: View Monthly Not available Available Available
Calendar: View Weekly Not available Available Available
Contacts: Delete Contact Available Available Available
Contacts: New Contact Available Available Available
Contacts: View Contacts Available Available Available
General: Accessibility for Blind and Low Vision Users Available Available Not available
General: Advanced Search Not available Not available Available
General: Arrange By Limited to a subset of choices
depending on the folder type
Available Available
General: Drag-and-Drop Not available Available Available
General: Exchange Control Panel Not available Not available Available
General: Favourites Not available Not available Available
General: Lync Integration Not available Not available Available
General: Mailtips Not available Not available Available
General: Message Tracking Not available Not available Available
General: Nickname cache Not available Not available Available
General: Notifications and Reminders Not available Available Available
General: Resource Mailbox Management Not available Not available Available
General: Right-Click Menu Not available Available Available
General: Scroll between pages (page controls) Available Available Not available
General: Web ready document viewing Not available Not available Available
Mail: Compose Messages by Using HTML Only plain text Available Available
Mail: Compose new messages Available Available Available
Mail: Conversation view Not available Not available Available
Mail: Mark as Junk Available Available Available
Mail: Mark as Read / Unread Available Available Available
Mail: Move / Manage Items Available Available Available
Mail: Reading Pane Not available Available Available
Mail: View Inbox and Folders Available Available Available
Mali: Attach Message to a Message Not available Not available Available
Manage Mobile Devices Available Available Available
Public Folders (Hybrid Cloud) Not available Not available Available
Public Folders (Hybrid On-Prem) Not available Available Not available
RBAC – Administrator settings Not available Not available Available
RBAC – Change user settings Not available Not available Available
Retention Policies Not available Not available Available
RMS Protection Not available Not available Available
S/MIME support Not available Not available Available
Search Address Book Available Available Available
Signature: Create HTML Not available Available Available
Signature: Create plain text Available Available Available
Users can create and edit personal distribution lists Not available Not available Available
Users can create and edit server side rules Not available Available Available
View Address Book Available Available Available