

Rename any OST files by changing the OST file extension to.
#Outlook on the web windows
Locate the following folder in Windows 8, Windows 7, or Windows Vista:Ĭ:\Users\ \AppData\Local\Microsoft\Outlook type the email address of the other mailbox that you want to open. on the outlook web app nav bar, click on your name. When viewing a flagged item in the Reading pane, a small. sign in to your account in outlook web app. A small red flag will display on the right side of the item. Alternatively, hover over an item and click the greyed out flag that is displayed to a mark it as flagged. To flag an item for follow up, right-click the item and choose Flag.
#Outlook on the web download
That is, delete the OST file, and then let Outlook create a new OST file and download the information again from Exchange Server. Flag Email in Outlook Web App: Instructions. If this method doesn't resolve the issue, we recommend that you rebuild the OST file.

#Outlook on the web Offline
You occasionally receive error messages when you synchronize your Offline Folder OST file (.ost) in Outlook with your mailbox on a server that's running Exchange Server. You experience an issue in Outlook, but that issue doesn't occur when cached mode is disabled. You see differences or mismatches between the messages that you receive in Outlook compared to those that you receive in Outlook Web App (OWA). When synchronization issues occur in Microsoft Outlook 2013 or Outlook 2010, you may experience one or more of the following symptoms.
