1. Problem description
The Thinkmail address book plug-in is installed on the Outlook client, causing the Thinkmail address book plug-in login window to pop up when the Outlook client is opened.
2. Solution
Click "File" in the upper left corner,
click "Options" and
on "Outlook Options", select "Add-ons", click "Go" and
uncheck "Richinfo Address Book Component" to use it normally.