When you start Outlook, suddenly monitor switches to a lower resolution, pretty much all the color is gone and gives the window a “classic” look. Closing Outlook returns everything back to normal again. Please follow the steps below :
Reset the Windows Theme
This is an easy fix which applies to most cases; change you theme back to the default theme that Windows shipped with;
- Windows XP
Right click an empty spot on the Desktop-> Properties-> tab Themes-> Windows XP - Windows Vista
Right click an empty spot on the Desktop-> Personalize-> section Theme-> Windows Vista - Windows 7
Right click an empty spot on the Desktop-> Personalize-> Aero Themes-> Windows 7
(or select Basic and High Contrast Themes-> Windows 7 Basic)
Compatibility Mode
1) Right click on the Shortcut of Outlook
2) Go to the Tab Compatibility
3) Check whether Run in 256 colors and run in 640 x 480 screen resolution are selected. Remove the selection
