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  • Question

  • Hello All,

    We have an error for all client machines when they opening outlook application:

    This is the error 


    VeasnaYim

    • Moved by Steve Fan Tuesday, August 8, 2017 6:18 AM Move to dedicated Outlook forum
    Monday, August 7, 2017 9:08 PM

All replies

  • Hi,

    It looks like the certificate has expired. Please try follow the instructions in the following article to remove the expired certificate and then see whether this issue continues:

    https://technet.microsoft.com/en-us/library/aa997569(v=exchg.150).aspx

    Hope this helps.

    Regards,

    Steve Fan


    Please remember to mark the replies as answers if they helped.

    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Tuesday, August 8, 2017 6:16 AM
  • Is is for Microsoft Exchange Server? we are using Microsoft office 365.

    Please advise 

    Best regards 


    VeasnaYim

    Tuesday, August 8, 2017 3:41 PM
  • I can confirm that the certificate expired, the screenshot says it's valid until August 6th 2017, while the post was made on August 7th.
    Thursday, August 10, 2017 8:27 AM
  • Is is for Microsoft Exchange Server? we are using Microsoft office 365.

    Please advise 

    Best regards 


    VeasnaYim

    Yes, it's for on-premise Exchange server. What's the certificate used for? I noticed that the certificate is issued to www.abc.com. 

    Regards,

    Steve Fan


    Please remember to mark the replies as answers if they helped.

    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, August 14, 2017 10:12 AM