Linq Cosmos DB ArgumentNullException Exception
I am using LinQ on the client side to query Cosmos DB. All the other properties work fine except two properties. One is the "id" and the other is the "RowKey". I manually checked the database, the type of RowKeys are all string, they…
High Partition Utilization & Potential Hot Partition Issue in Serverless CosmosDB ( High Normalized RUs AVG consumption alert )
We are experiencing hot partition issues in our Azure CosmosDB (serverless mode). Some partitions are consistently at 100% utilization, while others remain at 0%. This is leading to potential performance bottlenecks and repeated alerts. Key Details: …
Create a Document using Postman HTTP API request
I need to create a new document to my Azure Cosmos database container. The database name is mydb and container name is mycontainer. However, I get below response: {"code":"Unauthorized","message":"The input…
Cosmos DB Diagnostic Logs Not showing up RUs for Create operations
I am using CosmosDB for a while now, and I would like to take advantage of diagnostic logs to keep an eye on RU usage. Query logs work fine, HOWEVER my create requests are being logged with requestcharge equal to 0. Does anyone have any idea why that…
The /EnableTableEndpoint commandline parameter no longer works
A few years ago we build an application that used CosmosDB and for local integration testing we used the CosmosDB emulator. We want to make some changes to the application, but found that it now is impossible to get the Table Endpoint to run in the…

How to open this service? Can you attach the picture?(Change Stream on vCore-based Azure Cosmos DB for MongoDB (Preview))
When I use the change stream feature of mongodb in cosmos, it fails. How can I make mongodb in cosmos support this feature? // ChangeStreamExample.js const { MongoClient } = require("mongodb"); const uri = "xxxxxx"; async function…

How to connect Cosmos Table DB to managed Grafana?
I have a Cosmos Table DB with data that I wish to visualize. So I set up and instance of managed Graphana, but I can't figure out how to connect the DB to it. I see that Grafana offers a plugin, but it is closed source, so what is the alternative if I…
Zone Redundancy DR Exercise
There are many Azure services provide the Zone Redundancy (Availability Zones) feature. However as a client how do we know if this works as what Azure claimed? Is there a way for us to perform the DR exercise on those services with Zone Redundancy? Or…
My Mongo cluster on Azure CosmosDB fails to create and deploy everytime
I am attaching my JSON output from the failed activity log here: { "authorization": { "action": "Microsoft.DocumentDB/mongoclusters/write", "scope":…
How can I Increase CosmosDb RU and cost implication
Hello, I would like to ask how can I increase the max RU available in our cosmosDb account. Also, I would like to have some insights about the cost implications of have this number increased. Thank you
Desktop data migration tool is unable to export large data set
Hi, I am using Cosmos DB desktop data migration tool to export cosmos container data into JSON file, with 10K records tool works fine, meaning all records were exported but with 50K+ records for another container when tried to export it couldn't export…
Why isn’t my IoT Hub telemetry being ingested into Cosmos DB via Azure Functions?
Overview: I'm building an IoT solution on Azure where devices send telemetry to IoT Hub. The telemetry is routed using IoT Hub’s built-in Event Hub–compatible endpoint, and an Azure Function (using Python and the V2 programming model) to processes the…
Unable to connect to Cosmos DB today
Our application wasn't able to connect to Cosmos DB today, 2025-02-13, from around 3:00 AM to 3:30 AM Pacific Time GMT-8. We're using the Mongo API, the errors are: MongoDB.Driver.MongoWriteException: A write operation resulted in an error. WriteError: {…
Azure Cosmos for MongoDB - Need to find heavily used Database and collection from Azure Portal
Need to find heavily used Database and collection for Azure Cosmos for Mongo API from Azure Portal. Please anyone guide me through
With CosmosDb do queries that specify a PartitionKey have the returned results limited to an exact match on the PartitionKey if not specified in the WHERE clause
In CosmosDb I store documents that have a RowKey that maps to an EventId. I also have a dedicated field called PartitionKey which is a concatenation of StoreID and a day (day portion of DateTime). This makes it so that if I need to get all the events…
FIXED: App Service unable to connect to Cosmos database with private endpoints - RemoteCertificateNameMismatch
Hi, I have a problem with a new Cosmos account service. I have never deployed one before. Both the App Service and the Cosmos database account have private endpoints. Both private endpoints are in the same vnet and subnet. It seems the App Service…
Cosmos DB Data Explorer disabled
Azure Cosmos DB > Data Explorer disabled, so I couldn't create a table or add an entity.
Is there a more secure way to access cosmos mongdb vcore via python app service
Is there a more secure way to access data in Cosmos mongodb vcore via python App service. Currently I am using basic authentication using connection string. I would like to know if there is a way to authenticate using managed identity or AAD tokens.

I am trying to configure cosmos db output in stream analytics job, getting error as This subpartitioned container has more than 1 partition key path please use `PartitionKeyPaths`, But there is no option to configure path in output settings
I am trying to configure cosmos db output in stream analytics job, getting error as This subpartitioned container has more than 1 partition key path please use PartitionKeyPaths, But there is no option to configure path in output settings. How this can…
Does the cosmos GetItemQueryIterator method throw exception if it couldn't find any records?
Can you help me understand the GetItemQueryIterator<> method in Cosmos DB? Specifically, does it throw an exception if no records are found in the database? Additionally, does it query and return results partition by partition?