Is Your Classic Outlook Crashing? Here’s a Simple Fix From Microsoft

If you’ve been frustrated by classic Microsoft Outlook suddenly crashing when you try to open or start a new email, you’re not alone. Microsoft has acknowledged this annoying issue and shared a straightforward workaround to get your email flowing smoothly again while they work on a permanent fix.

This problem seems to hit users on the Monthly Enterprise Channel who updated Outlook for Microsoft 365, specifically starting with Version 2504 (Build 18730.20122). The core issue? Outlook is having trouble accessing a specific folder it needs, called the Forms Library. It’s particularly popping up for users on virtual desktop systems (VDI).

The good news is the fix is relatively simple – it involves manually creating that missing folder Outlook is looking for.

Person looking intently at a laptop screen displaying the Microsoft Outlook email client interface.

Why It’s Crashing: The Missing Folder

According to Microsoft, the classic Outlook client crashes because it “cannot open the Forms Library.” Think of this library as a place where Outlook stores bits of information it needs to display things correctly, like when you’re composing an email. If this specific folder (FORMS2) is missing from its usual spot on your computer, Outlook gets stuck and crashes.

How to Apply the Temporary Fix

Microsoft’s official workaround involves creating the missing FORMS2 folder manually. It might sound a bit technical, but the steps are easy to follow even if you’re not a computer expert.

Here’s what you need to do:

1. Close Outlook: Make sure Outlook and any other Microsoft Office applications (like Word or Excel) are completely closed.
2. Open the Run Command: Press the Windows key + R on your keyboard, or type “Run” in the Start menu search and open the “Run” application.
3. Enter the Path: In the Run box, type %localappdata%Microsoft and click OK. This command automatically takes you to the correct location in your user profile’s AppData folder.
4. Create the New Folder: In the File Explorer window that pops up, you’ll see a list of folders. Right-click anywhere in the empty space or click on “New” in the menu bar, then select Folder.
5. Name the Folder: Carefully type FORMS2 as the name for the new folder and press Enter. Make sure the name is exactly correct, including capitalization.

That’s it! You’ve just created the folder that Outlook was missing. You can now try opening Outlook again, and it should no longer crash when you try to compose or open an email.

What’s Next?

This is a temporary solution provided by Microsoft while they investigate the root cause and work on releasing an official update to fix the issue automatically. Keep your Outlook and Microsoft 365 apps updated, as the fix will likely arrive through a standard update.

It’s worth noting that Microsoft has been actively addressing various Outlook glitches recently. They’ve fixed issues like flickering shared mailboxes (though some users still report problems requiring workarounds), crashes related to opening specific types of emails (like Viva Engage or Power Automate notifications), and even crashes when simply writing emails in older versions. This ongoing effort shows they are working to keep the classic client stable for users.

If you encounter other strange behaviors in Outlook or other Microsoft 365 apps, checking Microsoft’s official support pages or reliable tech news sources often reveals known issues and workarounds before a permanent fix is released.