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 ...

Microsoft has admitted that an issue in Windows 11 24H2 could stop Outlook from starting. It has also been confirmed that Microsoft 365 Enterprise users will switch to the new Outlook in April 2026.

Since November, there have been reports of Outlook Classic users experiencing CPU spikes, freezes, and slowdowns when typing ...

Microsoft’s new Outlook app — labeled “Outlook (new)” as opposed to “Outlook (classic)” — normally saves your emails online, so you cannot access them without an internet connection. However, it’s now ...