Ce navigateur n’est plus pris en charge.
Effectuez une mise à niveau vers Microsoft Edge pour tirer parti des dernières fonctionnalités, des mises à jour de sécurité et du support technique.
![](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(102.4, 98%, 19%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAW%3C/text%3E%3C/svg%3E)
Hello,
Since 31/03/2025, after a Microsoft maintenance, all my IoT Device (4G) are not able to call my Azure App Service API.
The service is up and works well when i try with postman.
Is it an issue from Azure server?
Regards,
![](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(112.00000000000001, 77%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
Hello @Alexandre WAMBRE, could you please provide more details on why the IoT devices are failing to connect to the Azure App Service? Additionally, please share what steps you have taken, the code used, and the Git link to your code.
The IoT device failed with "socket closed" error. We are using a Quectel module with 4G network
Other people have the same issue here :
https://stackoverflow.com/questions/79549964/iot-device-fails-to-connect-to-azure-app-service-api-after-scheduled-maintenance
![](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(25.6, 95%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
Has there been any changes to security on this update @Sampath
@DJ I see LeelaRajeshSayana connected with you, and he will update you on that case. Regarding the above case, I will connect with Alexandre WAMBRE
@Sampath
I have managed to get a work around, but i think there is a security flow in TLS1.3, that make all app service at risk, as you can bypass TLS1.3 with 1.2
I have send PM to **LeelaRajeshSayana **with more information
Hello @Alexandre WAMBRE , the same issue was resolved in west Europe.
Could you please check the status history? https://azure.status.microsoft/en-us/status/history/
and Azure status overview https://free.blessedness.top/en-us/azure/service-health/azure-status-overview
@Sampath
Those links are producing errors. Can you please check them?
Has this issue been solved, as our device is still failing to connect?
@Sampath
I have managed to correct the links you sent and open the pages. There is nothing that mentions the issue has been resolved after the 31st of March
@Sampath,
The links provided do not show anything after 18th March.
My Device is still failing to connect to my API
@sampth Has this issue been made aware to the producer developers who are responsible?
@sampth Can some who oversees TLS operations help in this case?
Hi,
Any news on this subject?
Hi @Sampath . I still have the issue when i call the azure server directly. Do you have any news about this subject?