https://docs.whmcs.com/9-1/tags/microsoft-mail-provider/Recent content in microsoft-mail-provider onHugo -- gohugo.iohttps://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/microsoft/microsoft-connection-unsuccessful/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/microsoft/microsoft-connection-unsuccessful/Covers two causes of the Connection unsuccessful error when connecting Microsoft as a mail provider: an invalid Application (client) ID or Client Secret, fixed by creating a new Microsoft Entra ID app, and restricted user consent, fixed by a tenant admin granting consent in the Entra portal.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/microsoft/microsoft-mail-query-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/microsoft/microsoft-mail-query-errors/Explains that the error Failed to Create $app_name application. Error detail URL may not contain a query string occurs during Microsoft Entra ID app registration when Friendly URLs is set to Basic URLs, and gives steps to switch it to Full Friendly Rewrite and update the app’s Redirect URI.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/smtp/smtp-password-command-failed-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-email/smtp/smtp-password-command-failed-errors/Explains the “SMTP ERROR: Password command failed: 535 5.7.139” error as a result of Microsoft removing basic username/password SMTP authentication in 2024, and directs reconfiguring the Mail Provider settings in General Settings > Mail to use Microsoft Entra app credentials instead.