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m365-skilling-repo-management merged 4 commits into from
May 4, 2026
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[AutoPublish] main to live - 05/04 11:27 PDT | 05/04 23:57 IST #13566

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b30ca00
Add additional information about OWAAllowUserChoiceOfSigningCertifica…
lusassl-msft May 4, 2026
6f694f7
Tweak wording
lusassl-msft May 4, 2026
de5fb32
Update Set-SmimeConfig.md
chrisda May 4, 2026
be1661e
Merge pull request #13565 from lusassl-msft/lusassl-04052026-1
chrisda May 4, 2026
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5 changes: 3 additions & 2 deletions exchange/exchange-ps/ExchangePowerShell/Set-SmimeConfig.md
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Expand Up @@ -108,9 +108,10 @@ Accept wildcard characters: False

> Applicable: Exchange Server 2013, Exchange Server 2016, Exchange Server 2019, Exchange Server SE, Exchange Online

The OWAAllowUserChoiceOfSigningCertificate parameter specifies whether to allow users to select the certificate to use when they digitally sign email messages in Outlook on the web.
The OWAAllowUserChoiceOfSigningCertificate parameter specifies whether to allow users to select the certificate to use when they digitally sign email messages in Outlook on the web. Valid values are:

Valid input for this parameter is $true or $false. The default value is $false.
- $true: Users can manually select the certificate that's used to sign messages.
- $false: Outlook on the web automatically selects the signing certificate. The eligible S/MIME certificate with the most recent NotBefore value is used. The NotBefore value is evaluated as a full date and time value, with comparison precision up to seconds. Certificates issued on the same day are still differentiated if their NotBefore values differ by time. If two or more eligible certificates have the same NotBefore timestamp at seconds precision, the certificate that's selected is unspecified and isn't guaranteed to be the same across signing operations. This behavior is the default.

```yaml
Type: Boolean
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