Last Updated: June 24, 2025
ISSUE
When you open or start a new email, classic Outlook crashes. This issue occurs because Outlook cannot open the Forms Library. This issue can occur for Outlook on all Microsoft 365 Office channels. The emerging cases for this issue are on virtual desktop infrastructure (VDI).
The crash event from the Windows Event Viewer Application Log may have a similar signature but builds may differ:
Faulting application name: OUTLOOK.EXE, version: 16.0.14334.20090, time stamp: 0x683fe030 Faulting module name: OLMAPI32.DLL, version: 16.0.14334.20090, time stamp: 0x683ff910 Exception code: 0xc0000409 Fault offset: 0x00196e1c Faulting process id: 0x9100 Faulting application start time: 0x01dbdbe04fe54514 Faulting application path: C:\Program Files (x86)\Microsoft Office\root\Office16\OUTLOOK.EXE Faulting module path: C:\Program Files (x86)\Microsoft Office\root\Office16\OLMAPI32.DLL
STATUS: FIXED
This issue has been fixed in the following versions and builds. Please reference Update History for builds by channel, Update history for Microsoft 365 Apps (listed by date).
Expected fix release date 6/24/25 Current Channel Preview Version 2506 Build 18925.20094 Monthly Enterprise Channel Version 2504 Build 18730.20226 Monthly Enterprise Channel Version 2503 18623.20302 Monthly Enterprise Channel Version 2502 16.0.18526.20438 Semi-Annual Enterprise Channel (Preview) Version 2502 18526.20438 Semi-Annual Enterprise Channel Version 2408 Build 17928.20588 Semi-Annual Enterprise Channel Version 2402 Build 16.0.17328.20836 Outlook 2024 Build 16.0.17932.20408 Outlook 2021 Build 16.0.14334.20116 Expected Fix Release Date for 7/1/2025 non-Security Update: Outlook 2016 Expected fix release date for 7/8/25 Public Update Outlook 2019
WORKAROUND
You may be able to work around the issue by creating the FORMS2 folder. This folder is expected to exist at C:\Users\<username>\AppData\Local\Microsoft\FORMS2.
To create the folder, please do the following:
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Close Outlook and other Office applications.
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Select Start > Run and enter the path %localappdata%\Microsoft and select OK.
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In the File Explorer menu, select New > Folder and name it FORMS2.
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See Also
Fixes or workarounds for recent issues in classic Outlook for Windows
