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How to fix Invalid Certificate Microsoft Outlook cannot sign or encrypt this message because there are no certificates?

Anonymous
2018-04-12T22:27:17+00:00

I am using Office 365 account provided by my school & getting below msg while sending emails.

What should i do this to fix this issue?

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2018-04-13T02:26:27+00:00

    Hi jackin,

    For your issue, please go to File->Options->Trust center->Trust Center Settings…->Email Security, and ensure that the “Encrypt contents and attachments for outgoing messages” and “Add digital signatures to outgoing messages” is unchecked.

    Meanwhile, to better know about this issue, may I confirm with you the following information?

    1. Are you trying to send the signed or encrypt emails? If so, did you acquire a certificate for your accoount and set it on Outlook client?
    2. What’s the type of the account? Is it an Office 365 account, POP, or IMAP?

    About signed emails and encrypt emails, you may refers to this article: https://support.office.com/en-us/article/secure-messages-by-using-a-digital-signature-549ca2f1-a68f-4366-85fa-b3f4b5856fc6?omkt=en-US&ui=en-US&rs=en-US&ad=US.

    By the way, if the Outlook client isn’t in the latest version, to get better experience, you may try to update it via File->Office account->Update Options->Update Now.

    Thanks,

    Anna

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  1. Anonymous
    2018-04-14T09:39:06+00:00

    Hi jackin,

    Do you have any updates for this issue? Please let me know if you need further assistance.

    Thanks,

    Anna

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