Intermittent Error: Cannot Set AccessToken Property in .NET Core 8 with SQL Server

Question

Description: I am encountering an intermittent error in my .NET 8 application when trying to establish a database connection using the Microsoft.Data.SqlClient library. The issue occurs sporadically during runtime, resulting in the following unhandled exception:

vbnet
Copy code
System.InvalidOperationException: Cannot 

Key Details:

Environment:

• Application: w3wp.exe
  • CoreCLR Version: 8.0.824.36612
    • .NET Version: 8.0.8
    Connection String: My connection string specifies Authentication along with other parameters for Azure Active Directory authentication. The AccessToken property is set programmatically for some specific scenarios. Error Pattern:

    - The error occurs intermittently and is not consistent.
    
       - Restarting the application sometimes resolves the issue temporarily.
    
       **Code Reference**: The exception points to the `DbContextOptionsBuilder` configuration in my `Program.cs` file:
    
       ```javascript
       csharp
       Copy code
       services.AddDbContext<MyDbContext>((serviceProvider, options) =>
    

{

           ```

           
           **Observation**: The error suggests that both `AccessToken` and `Authentication` cannot be used simultaneously. However, the configuration works most of the time, and the error appears unpredictably.
```Request for Help:

1. Has anyone encountered similar intermittent issues when using `AccessToken` with Azure Active Directory in SQL Server connections?

1. Are there specific guidelines or best practices to handle such scenarios?

1. Could this be related to token caching, thread safety, or connection pool issues?

Any insights or suggestions would be greatly appreciated!**Description:**

I am encountering an intermittent error in my .NET 8 application when trying to establish a database connection using the Microsoft.Data.SqlClient library. The issue occurs sporadically during runtime, resulting in the following unhandled exception:


```powershell
vbnet
Copy code
System.InvalidOperationException: Cannot 

Key Details:

Environment:

• Application: w3wp.exe
  • CoreCLR Version: 8.0.824.36612
    • .NET Version: 8.0.8
    Connection String:
    My connection string specifies Authentication along with other parameters for Azure Active Directory authentication. The AccessToken property is set programmatically for some specific scenarios. Error Pattern:

    - The error occurs intermittently and is not consistent.
    
       - Restarting the application sometimes resolves the issue temporarily.
    
       **Code Reference**:  
       The exception points to the `DbContextOptionsBuilder` configuration in my `Program.cs` file:
    
       ```javascript
       csharp
       Copy code
       services.AddDbContext<MyDbContext>((serviceProvider, options) =>
    

{

           ```

           
           **Observation**:  
           The error suggests that both `AccessToken` and `Authentication` cannot be used simultaneously. However, the configuration works most of the time, and the error appears unpredictably.
```Request for Help:

1. Has anyone encountered similar intermittent issues when using `AccessToken` with Azure Active Directory in SQL Server connections?

1. Are there specific guidelines or best practices to handle such scenarios?

1. Could this be related to token caching, thread safety, or connection pool issues?

Any insights or suggestions would be greatly appreciated!