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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(28.799999999999997, 82%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAB%3C/text%3E%3C/svg%3E)
Lorsque j'essaie d'envoyer des messages à partir de Microsoft Office Outlook, une fenêtre s'affiche qui me dit :
"Microsoft Office Outlook n'a pas pu signer ou crypter ce message car vous n'avez pas de certificat qui puisse être utilisé à partir de votre adresse de messagerie".
Quelle est la marche à suivre pour rendre ma messagerie fonctionnelle ?
D'avance merci pour votre aide.
When I try to send messages from Microsoft Office Outlook, i see a window that tells me:
"Microsoft Office Outlook could not sign or encrypt this message because you do not have a certificate that can be used from your e-mail address."
How do I get my email up and running?
Thank you in advance for your help.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Q&A forums are currently English only. I'd try asking for help over here in dedicated forums.
https://social.msdn.microsoft.com/Forums/fr-fr/home
https://social.technet.microsoft.com/Forums/fr-fr/home
https://answers.microsoft.com/fr-fr
--please don't forget to upvote and Accept as answer if the reply is helpful--
When I try to send messages from Microsoft Office Outlook, i see a window that tells me:
"Microsoft Office Outlook could not sign or encrypt this message because you do not have a certificate that can be used from your e-mail address."
How do I get my email up and running?
Thank you in advance for your help.
Hello AnnieBost,
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.
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.
You can also alternative solutions in the next threads:
https://answers.microsoft.com/en-us/outlook_com/forum/all/receiving-error-microsoft-outlook-cannot-sign-or/650d1dd2-5657-42b8-a2a0-579783c084d4
https://answers.microsoft.com/en-us/outlook_com/forum/all/microsoft-outlook-cannot-sign-or-encrypt-this/5f93264f-64d9-469f-b801-49750401b3cf
--If the reply is helpful, please Upvote and Accept as answer--