If Outlook disappeared or has stopped working after importing PST file in Windows 11, here is how you can fix the problem. You can go through this article if you have already imported the PST file ...

If your Outlook shows the “Error 0x80070021, Another process has locked a portion of the file“, use these fixes to resolve this error message: Check if Outlook ...

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...

I use Outlook 2010. Every once in a while, outlook gives an error saying "Cannot expand the folder. The set of folders cannot be opened. The file \whatever\my email ...

Microsoft announced two more open source projects today, which will give developers the ability to access data from the widely used (and hacked) Outlook program – even if it’s to develop competing ...

Several Outlook users, on different forums, have reported encountering the error “OST file cannot be opened,” when trying to open the application or sending ...

Microsoft has released two open source tools on CodePlex that let developers more easily create apps for Outlook PST files. Those tools are not only open source, they’ve been released under the Apache ...

If your Outlook Classic freezes or hangs when you use POP accounts or deal with PST files, you'll need to remove Windows 11 ...