Last Updated: June 12, 2018
ISSUE
After updating Outlook to Monthly Channel Version 1805 (Build 9330.2087), external applications may crash when interacting with or sending email.
For example, you may get an "Outlook is not responding" error with Intuit QuickBooks. Possible solutions for that specific error can be tried via this Intuit QuickBooks Help article: Crash: Com Error in QuickBooks Desktop
STATUS: FIXED
This issue is fixed in Monthly Channel Version 1805 (Build 9330.2118) and higher. To get the latest update immediately, open Outlook and choose File > Office Account > Update Options > Update Now.
Microsoft made a service change for Outlook on June 11 2018 (3:45 PST) to mitigate instances of a crash that happens if you're using a POP or IMAP account. Because of the way the service changes are implemented and also because the issue involves 3rd party interaction with Outlook, you may have to restart Outlook up to three times to ensure that the service change is applied. These restarts ensure that the service change is recognized, then downloaded, then applied successfully to your install of Outlook.
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See Also
Fixes or workarounds for recent issues in Outlook for Windows
