Microsoft Outlook comes in two varieties: there's the Outlook.com email service and the Outlook inbox software. In the case of the latter product, you may run into a ...

If when using Microsoft Outlook on your Windows PC, you receive a message – Cannot start Microsoft Outlook, The command line argument is not valid, Verify the switch you are using, then here are some ...

Microsoft has fixed a known issue affecting Outlook for Microsoft 365 users since June and causing slow starts and freezes as if Offline Outlook Data Files (OST) were syncing right after launch.

Q. Whenever I open Outlook, I am greeted with a message that says "Cannot start Microsoft Outlook. Cannot open the Outlook window." How can I fix this problem and get back to using Outlook? A. This ...

Microsoft has shared a workaround for an issue where Outlook for Microsoft 365 would be stuck on the startup screen for a while, and on some occasions, it would entirely fail to launch. Microsoft has ...

Some Office users are unable to access Outlook on their computer. When trying to do the same, the following error message pops up out of nowhere and they want to know ...

Microsoft has confirmed a new bug is breaking Windows Outlook and there is no way to 'fix' it, at least for now. Last month, Microsoft announced that it is killing the lightweight version of the ...