Outlook 365 suddenly won't open

Hello; Outlook worked this morning, now it won't open, says to open in Safe Mode, but that doesn't work, tries to open for 5 seconds than nothing. Restarted PC and no help. Please advise! Steven F 60...

outlook for windows

Steven_F_603
Jul 15, 2020
RobWill_19
Steven F, original poster here: my Outlook just fixed @ 1:20 Pm pst, I tried it and it opened right up. Hope the same for all of you, maybe 1 at a time! Thanks all.......

Joshua Bowers

Copper Contributor

Jul 15, 2020

We are having the same issue reported from multiple users. ~School District in California

Did your computer recently install updates? If so, which ones?

Steven_F_603

Fernando_del_rio

Copper Contributor

Jul 15, 2020

try to run this command from MSDOS CONSOLE it is a down grade .
c:\"Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.12827.20470
worked ok for me

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Outlook 365 suddenly won't open

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