The information contained in this section will help you solve problems with Outlook. While some of the problems are related to bugs (which may or may not get fixed), many of the problems are just how Outlook was designed, which doesn't necessarily fit with how we want to use it. Other problems are caused by the interaction between Outlook and other programs or Outlook add-ins.
Help! My Email Opens Slow
The reading pane in Outlook 2003 is slow when I switch from different folders.
Imported Addresses are Missing from Address Book
Addresses imported into the Contacts folder may not appear in the Address Book display.
Add-in can only be Disabled by an Administrator
When you attempt to remove an add-in, the dialog tells you that only an administrator can connect or disconnect the add-in: This add-in is installed for all users on this computer and can only be connected or disconnected by an administrator.
Email address was spelled wrong, is delivered
When you use the Resend button in an NDR to resend a message, the incorrect email address may be visible on the received message.
Cannot Expand Outlook Folders: Not Enough Memory
This error affects Exchange server users with a large number of folders in their profile, either in their mailbox, public folders, or SharePoint lists. In most cases, you won't have a problem until you exceed approximately 1,000 folders, or a gigabyte of space is used. Outlook works fine for a little bit (5-10 minutes) before
Outlook is asking me to accept the End User License Agreement
We get many questions about Office activation failing: "After installing and activating Office, Outlook keeps asking to accept the End User License Agreement (EULA)." This is caused by Windows security and permissions. Your Windows user account doesn't have the necessary permissions to write the activation to the registry. How to Fix Method 1: Right click
Help! My Email is Marked as Read
How can you read email on a smartphone and not have it marked read before you read it in Outlook?
How to Stop Accidentally Closing Outlook
How to help prevent accidentally closing Microsoft Outlook by displaying the "you have unsent messages" dialog.
Outlook Virus Misconceptions
We used to think that you had to open or, in some case, preview a message for it to infect your system with a virus. It's now been proven that malicious code can enter your system via an Outlook mail message from the Internet -- even if you do not open or preview it. The
Outlook Errors When You Reply or Create a New Message
Solution for issue for Microsoft Outlook crashing when replying to messages or creating new messages or Sending reported error (0x8004010F) : 'Outlook data file cannot be accessed.'
Signatures and the Send to… command
Microsoft finally published a long-overdue KB article explaining why signatures are not added to messages initiated using Send to menus in other applications, the Send to Mail Recipient command in Windows Explorer, or by creating the message programmatically. You also can't do anything in Outlook until the message is either sent or saved and closed.