Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
0 answers
Email Communication Services SDK suddenly deadlocks any and all Email send requests.
We've been using Azure Communication Services for a while now for our Email/SMS needs without issue. However, suddenly as of last night, sending an email through the SDK (whether locally debugging in Visual Studio or running from a pod in AKS) causes the…
Azure Communication Services
asked 2026-04-09T11:00:19.38+00:00
![](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(16, 64%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELH%3C/text%3E%3C/svg%3E)
Lucas Harskamp
20
Reputation points
commented 2026-04-09T11:45:38.37+00:00
![](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(80, 7.000000000000001%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPM%3C/text%3E%3C/svg%3E)
Praneeth Maddali
7,310
Reputation points Microsoft External Staff
Moderator
1 answer
increase Azure Communication Services (Email) rate limits, need to raise a quota/support request
We are using Azure Communication Services Email for a production system. Use case: - Transactional emails (password reset, alerts, notifications) - Expected volume: ~5,000 emails per hour We have implemented: - Retry logic - Throttling controls -…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-04-09T04:27:30.48+00:00
![](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(28.799999999999997, 8%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAS%3C/text%3E%3C/svg%3E)
ADMIN - SRA IT
0
Reputation points
edited an answer 2026-04-09T08:01:01.13+00:00
Praneeth Maddali
7,310
Reputation points Microsoft External Staff
Moderator
0 answers
Issue: Lag in start of Recording for Incoming Calls handled by Azure Communication service causing the first few seconds of the call to be missed out. This issue doenst happen when there is a lag when ACS answers the call. summary
Issue: Lag in start of Recording for Incoming Calls handled by Azure Communication service causing the first few seconds of the call to be missed out. This issue doenst happen when there is a lag when ACS answers the call. summary Note: its during the…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-04-07T13:59:53.3066667+00:00
![](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(240, 77%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMS%3C/text%3E%3C/svg%3E)
Mohammed Suhail
40
Reputation points
commented 2026-04-08T12:36:16.57+00:00
Praneeth Maddali
7,310
Reputation points Microsoft External Staff
Moderator
2 answers
Securing Azure Container App Endpoints Used by Azure Communication Services (Call Automation + Media Streaming)
Background I have a Python-based real-time voice bot running on Azure Container Apps. It uses ACS Call Automation SDK with bidirectional media streaming. The app exposes 3 endpoints: POST /api/incomingCall - receives incoming call events from ACS via…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-30T09:03:51.38+00:00
![](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(204.8, 52%, 29%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBN%3C/text%3E%3C/svg%3E)
Balar, Nishilkumar
0
Reputation points
commented 2026-04-07T09:26:01.1733333+00:00
![](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(54.400000000000006, 72%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EVB%3C/text%3E%3C/svg%3E)
Varun Burra
5
Reputation points Microsoft External Staff
Moderator
3 answers
One of the answers was accepted by the question author.
https://amp.azure.net/ returns ERR_CERT_COMMON_NAME_INVALID
https://amp.azure.net/ returns a ERR_CERT_COMMON_NAME_INVALID error. This server couldn't prove that it's amp.azure.net; its security certificate is from *.azureedge.net. We reference to a couple of items hosted on amp.azure.net: …
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-04-03T01:21:32.4066667+00:00
![](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(137.6, 51%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECG%3C/text%3E%3C/svg%3E)
Cesar Garcia
20
Reputation points
edited an answer 2026-04-06T17:06:12.1433333+00:00
Cesar Garcia
20
Reputation points
2 answers
One of the answers was accepted by the question author.
Add button disabled in Email Communication Service. How to enalbe it ?
Hello, I am using ACS and setup a custom domain to add to the mail service. The default email address provided for the domain is ******@mydomain.com But I want to change the sender name to ******@mydomain.com. We are on the default tier. The only…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-04-06T07:02:15.45+00:00
![](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(108.80000000000001, 25%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESR%3C/text%3E%3C/svg%3E)
Sai Rajesh Ramaraju
20
Reputation points
accepted 2026-04-06T09:32:05.78+00:00
Sai Rajesh Ramaraju
20
Reputation points
2 answers
How to enable G.722 codec for Azure Communication Services phone number?
I'm using Azure Communication Services phone number for an AI voice assistant with Azure OpenAI Realtime API. Current Issue: Audio codec appears to be G.711 (8 kHz narrowband) Speech recognition accuracy is low Particularly poor for numbers …
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-04-02T07:51:53.4133333+00:00
![](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(288, 15%, 37%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERH%3C/text%3E%3C/svg%3E)
Raife Hizlan
0
Reputation points
answered 2026-04-05T15:22:30.8466667+00:00
![](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(144, 36%, 23%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESH%3C/text%3E%3C/svg%3E)
Shree Hima Bindu Maganti
6,955
Reputation points Microsoft External Staff
Moderator
2 answers
Porting in ~30 phone numbers - should we request placeholders?
We are going to be porting in roughly 30 DIDs soon, but in preparation, should we go ahead and acquire new "temp" numbers for these so that we can build out our processes and test everything? My concern is that there could be limits on number…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-16T17:33:50.5+00:00
![](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(92.8, 6%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMB%3C/text%3E%3C/svg%3E)
Mark Baker
0
Reputation points
edited an answer 2026-03-31T14:53:41.65+00:00
Shree Hima Bindu Maganti
6,955
Reputation points Microsoft External Staff
Moderator
2 answers
ACS Advanced Messaging: WhatsApp channel stuck in Disconnected state, GET /messages/channels returns 404, cannot re-register phone number
Environment Resource: CommunicationAbanteResource (Resource Group: AbanteApplications) Subscription: DataX DEV (b2c447f4-0f0b-471d-a130-0c72330f08f2) ACS Endpoint: https://communicationabanteresource.europe.communication.azure.com …
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-27T08:46:47.7366667+00:00
![](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(118.4, 53%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPA%3C/text%3E%3C/svg%3E)
Pablo Amián Sánchez
0
Reputation points
edited an answer 2026-03-31T10:21:22.7166667+00:00
![](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(153.6, 51%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAN%3C/text%3E%3C/svg%3E)
Aditya N
2,455
Reputation points Microsoft External Staff
Moderator
2 answers
One of the answers was accepted by the question author.
Please increase my email quota on Communications Services
I would like to be able to send 30 emails per minute.
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-27T14:38:17.1533333+00:00
![](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(214.4, 48%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAB%3C/text%3E%3C/svg%3E)
André Boonzaaijer
40
Reputation points
accepted 2026-03-30T10:52:15.9366667+00:00
André Boonzaaijer
40
Reputation points
3 answers
Purchased phone number for a communication service doesn't show up
After purchasing a phone number for a communication service, the phone number does not get listed even though the notification states that the phone purchase is successful and is now ready for use
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-16T04:13:13.31+00:00
![](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(70.4, 59%, 16%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJV%3C/text%3E%3C/svg%3E)
Jasper Vale
0
Reputation points
answered 2026-03-30T09:50:57.82+00:00
Shree Hima Bindu Maganti
6,955
Reputation points Microsoft External Staff
Moderator
2 answers
ACS Email SCL:5 despite SPF/DKIM/DMARC pass — request ML model re-evaluation
We are sending transactional emails (signing ceremony invitations) via Azure Communication Services from our custom domain . All authentication passes: SPF: pass DKIM: pass (when not timing out — see below) DMARC: pass (action=none) Despite this,…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-15T20:31:45.8866667+00:00
![](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(265.6, 94%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELE%3C/text%3E%3C/svg%3E)
Lucas Edson
21
Reputation points
answered 2026-03-30T07:54:27.3466667+00:00
Shree Hima Bindu Maganti
6,955
Reputation points Microsoft External Staff
Moderator
1 answer
One of the answers was accepted by the question author.
Teams Phone Extensibility calls to ACS
Good afternoon, we are trying to leverage the new functionality to route calls from Teams Phone to Azure Communication Service Event Grid (and then a web app with the call automation SDK). I completed the configuration as the documentation at…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2025-11-11T14:35:30.9033333+00:00
![](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(249.60000000000002, 48%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDR%3C/text%3E%3C/svg%3E)
Davide Rasoli
40
Reputation points MVP
commented 2026-03-26T20:53:44.0433333+00:00
Davide Rasoli
40
Reputation points MVP
2 answers
Communication Service can't connect to a verified domain
When connect email domain in communication service, I see there is no verified domain under the email service, but in Email communication Service-->settings-->Provision domain, i can see my custom domain have been all verified (SPF/DKIM/DKIM2).…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-26T17:15:14.0533333+00:00
![](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(28.799999999999997, 52%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
PN
20
Reputation points
answered 2026-03-26T18:07:57.54+00:00
Praneeth Maddali
7,310
Reputation points Microsoft External Staff
Moderator
2 answers
One of the answers was accepted by the question author.
"Webhook validation handshake failed" when trying to use Microsoft Entra authentication on event subscription
I have connected my copilot studio agent to the WhatsApp channel. When you connect through this channel your event subscription on your Azure Communication Service gets auto-generated with the correct filters and webhook. The webhook follows this…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-24T06:32:13.78+00:00
![](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(220.8, 85%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJV%3C/text%3E%3C/svg%3E)
Justin van Heerden
20
Reputation points
accepted 2026-03-26T10:16:32.28+00:00
Justin van Heerden
20
Reputation points
0 answers
Join: Microsoft Azure Q&A Champions Program
The Microsoft Azure Q&A Champions Program recognizes and empowers a global community of internal and external Azure experts who help customers succeed by providing high-quality, trusted answers on Microsoft Q&A. The program scales expert led…
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-25T23:13:30.6233333+00:00
Ashley Swearingen
0
Reputation points Microsoft External Staff
Moderator
answered 2026-03-25T23:13:42.79+00:00
Q&A Assist
2 answers
One of the answers was accepted by the question author.
Can't get SPF verified on Azure Email comm service
Hi, I am setting up the email comm service on Azure, I updated a TXT, v=spf1 include:spf.protection.outlook.com with my domain on godaddy and seems the result of nslookup is ok. My DKIM and DKIM2 are both verified, just can' get verified on SPF.
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
1 answer
One of the answers was accepted by the question author.
Actionable adaptive cards
ACS doesn't support sending actionable adaptive card email messages. Is that correct? And Is ACS on retirement path in 2029?
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-24T18:02:19+00:00
![](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(182.40000000000003, 35%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAP%3C/text%3E%3C/svg%3E)
Arjun Peddi
20
Reputation points Microsoft Employee
accepted 2026-03-24T18:21:14.15+00:00
Arjun Peddi
20
Reputation points Microsoft Employee
1 answer
Increase email send limit for Email communication service
I connected my app to ACS to send emails, but it is showing a limit of 100 emails per hour. I am trying to raise a support request but there is no option at all.
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
asked 2026-03-23T09:12:08.54+00:00
![](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, 89%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EE%3C/text%3E%3C/svg%3E)
EventPlanner
0
Reputation points
commented 2026-03-24T07:11:27.4233333+00:00
Aditya N
2,455
Reputation points Microsoft External Staff
Moderator
2 answers
One of the answers was accepted by the question author.
Add a MailFrom Address
On my Email Communication Services Domain MailFrom addresses the Add is disabled. How do get it enabled? My mail setup is successful and I have sent emails through it.
Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
1,611 questions
![](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(252.8, 60%, 34%)' 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)