Forum Discussion

Off2w0rk's avatar
Off2w0rk
Brass Contributor
Dec 06, 2016

Outlook - Certificate has been revoked

Hi all,   not sure if anyone has experienced it, but we are getting tthis error multiple times a day when using outlook. It says :   Outlook.office365.com Information you Exchange with this sit...
2016
exchange online
office 365
Javier Garcia's avatar
Javier Garcia
Copper Contributor
May 22, 2017

Same issue. Exchange 2013, Load-balanced servers via Netscaler. Noticed after upgrading clients to 2016. Ticket open with MS support but their only solution is to disable the "Check for Publisher's Certificate Revocation" in IE which is not a real solution. 

Hap's avatar
Hap
Brass Contributor
May 23, 2017
Can you send me your support nr? I will create a premier support request today and can reference your ticket.
  • MichaeL3_6's avatar
    MichaeL3_6
    Copper Contributor
    Jan 11, 2019

    I keep getting the message outlook. Office365.Com has had its security certificate revoked. Is this true? What action should I take?

    • MichaeL3_6's avatar
      MichaeL3_6
      Copper Contributor
      Jan 11, 2019

      Just to add to my previous message I have now viewed the certificate and clicked on the tab titled Certification Path. This says: this certificate is okay.

      Does that mean there is actually no problem and this is just a glitch?

      • Sergg's avatar
        Sergg
        Iron Contributor
        Jul 16, 2021
        July 2021 - We got this across few personal and work computers few minutes ago. Various locations, same business.
  • Javier Garcia's avatar
    Javier Garcia
    Copper Contributor
    May 25, 2017
    [REG:117051515740234]
    • Hap's avatar
      Hap
      Brass Contributor
      Jun 07, 2017

      Thanks. I created a case as well and referenced yours. 

       

      Found out something interesting. Everytime the revoked message appears, I have 2 Lync event in my application eventlog at exactly that timestamp:

       

      Lync has enabled event logging.
      Information about failed calls will be sent to the Windows event log.

       

      and

       

      LyncPlatform has enabled event logging.
      Information about failed calls will be sent to the Windows event log.

       

      Other than this, it seems totally random. Can stay away for weeks, then popup daily.

  • Paul Cunningham's avatar
    Paul Cunningham
    Steel Contributor
    May 23, 2017

    If you're having certificate warnings in Outlook for an on-prem Exchange deployment you should post a screenshot here so we can see exactly what the warning says. There's a number of potential problems and solutions for certificate issues.

Resources