7,920 questions
I dont think that is supported. Only RSA:
https://www.reddit.com/r/exchangeserver/comments/flzblc/ecdsa_cert_with_exchange_2016/
Error message when trying to add a TLS certificate that uses ECC for the key (reason: KeyAlgorithmUnsupported)
![](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(262.40000000000003, 15%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVC%3C/text%3E%3C/svg%3E)
Vinícius Neves
1
Reputation point
I'm getting an error message when trying to add a TLS certificate that uses ECC for the key. The message officially says (reason: KeyAlgorithmUnsupported).
The new SSL is visible in the certificate console under Personal - Certificates.
The issue is that is not visible in the Exchange Admin Center, and Get-exchangecertificate does not show the new ssl
My Exchange Server 2019 version is 15.2.1118.7 and OS is Windows Server 2019
Exchange Exchange Server Management
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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(246.4, 22%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKY%3C/text%3E%3C/svg%3E)
Kael Yao 37,746 Reputation points Moderator2024-01-08T01:18:28.3233333+00:00 Hi @Vinícius Neves Maciel Souto,
Just checking in to see if above information was helpful. Please let us know if you would like further assistance.
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Andy David - MVP 157.4K Reputation points MVP Volunteer Moderator2024-01-03T19:16:13.7566667+00:00