Changes
Starting March 17, 2026, client-side Signature authentication for ApsaraMQ for MQTT is temporarily unavailable.
Affected scope
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Existing clients and instances that use Signature authentication are not affected.
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New instances no longer support Signature authentication.
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Use one of the following alternatives: token authentication, unique-certificate-per-device authentication, or custom authentication.
Effective date
This change takes effect on March 17, 2026. The reopening date will be announced separately.
Action required
If you plan to create a new instance, switch to one of the supported authentication methods listed above.
Contact support
We apologize for any inconvenience. If you have questions, join the DingTalk group 116015007918 to contact ApsaraMQ for MQTT technical support.