Most of the times, Outlook stops responding due to a very large mailbox file that it's causing Outlook to require more resources than the computer can offer.Weight Diet for Outlook can restore your Outlook speed and stability by decreasing & compacting your mailbox file, making Outlook to require less resources.Scenario: Microsoft Outlook is probably the most complex email client software for Windows.Not only that it offers so many features, but it is also designed as a connectivity tool with other software or hardware products.I have searched all over, and there seem to be many with similar (apparently) problem, and found numerous "solutions" (some even more cargocultish than mine), but so far none of them worked.In short, I honestly have no idea what is actually causing Outlook to lock up, I might be completely barking up the wrong tree.Here are the most common reasons why Outlook may stop responding, popping up the annoying "end process" window or simply responding very slow to your input.
If you are or have been among such users, you’ll find this article rather helpful.
As a result, it's stability also relays on 3rd party software (programs or drivers) - a badly designed piece of software can easily cause Outlook to require more and more system resources, until it crashes or it stops responding properly. If the restart doesn't solve anything, try to close 3rd party programs that run at the same time with Outlook, maybe one of those programs is causing Outlook to require more resources.
If the situation doesn't change, see below for more potential causes/solutions.
Scenario: Microsoft Outlook offers a complex mechanism for programming Outlook add-ins.
Although the vast add-in majority is designed to help you improve your Outlook experience, sometimes 3rd party Outlook add-ins can cause Outlook crashes or they can simply conflict with each-other.