Forum Discussion

Steven_F_603's avatar
Steven_F_603
Copper Contributor
Jul 15, 2020
Solved

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's avatar
    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.......

ewalker33401's avatar
ewalker33401
Brass Contributor
Jul 15, 2020

I just removed the update that supposedly "improves outlook security" and I am back up and running. Just wasted the last few hours trying to fix this.   Wish microsoft would go back to the old way of doing updates and let us decide how and when to implement Andy D'Hollander 

Rondia_Uptown's avatar
Rondia_Uptown
Copper Contributor
Jul 15, 2020

I was having issues; checked for updates; updated; still having issues.  It opens then immediately disappears...  Has anyone figured out a solution?

 

  • S2k9k's avatar
    S2k9k
    Copper Contributor
    Jul 15, 2020

    I've done this fix for many Office365 & Office 2016 clients:

     

    Elevated command prompt, run "C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.12827.20470

     

    Rondia_Uptown 

    • JWynn64's avatar
      JWynn64
      Copper Contributor
      Jul 15, 2020

      S2k9k Thank you, this worked for me. What a relief....my whole morning gone but at least I'm back up and running:)

    • Rondia_Uptown's avatar
      Rondia_Uptown
      Copper Contributor
      Jul 15, 2020

      Trying again...

       

      It's doing something this time; it didn't do anything the last time.  (I probably entered it wrong).

       

      Crossing my fingers.....

       

      It worked... xoxo 🙂 🙂 🙂 🙂   Thank you so much!!

       

       

  • Rondia_Uptown's avatar
    Rondia_Uptown
    Copper Contributor
    Jul 15, 2020

     Control Panel, click on “Programs and Features”, then “View installed updates”, locate the (KB4565483) Update, right click and choose uninstall.  As always you should have a backup of your system before adding or removing updates.

     

    I don't find the KB4565483 to uninstall... ? 😞

    • RobWill_19's avatar
      RobWill_19
      Copper Contributor
      Jul 15, 2020

      Rondia_Uptown  I am finding the same on some machines, but Microsoft seems to be pushing out the fix. Closing Outlook and reopening has resolved on most recent machines I have looked at.  There is a message box within Outlook stating the problem was detected.

    • Rondia_Uptown's avatar
      Rondia_Uptown
      Copper Contributor
      Jul 15, 2020

      Why do these things always happen on a tax deadline...  

Resources