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IT Toolbox

Understand, diagnose and solve IT problems

0x80072F8F — Check failure of a secure connection

Windows does not properly establish or validate a secure TLS connection.

Windows detects components necessary for updates or maintenance as missing or corrupt.

DISM fails to recover the components necessary for repair.

A Windows update could not complete its installation; several causes are possible.

Microsoft 365 refuses the SMTP authentication of the client because SMTP AUTH is disabled to the required level.

The SMTP server refuses the message for a reason of authorization, relay or policy.

A proxy or gateway received an invalid response from the upstream application server.

The web server or the application indicates that the service is temporarily unavailable.

A gateway did not receive a response from the server upstream within the set time.

The DNS solver was unable to provide a valid response to the request.