Solved Solutions to computer programming Errors

Unable to start Kestrel. System.InvalidOpera

.NET 7
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Unable to start Kestrel. System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date

.NET 7
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System.Net.Sockets.SocketException (10013): An att

.NET 7
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System.Net.Sockets.SocketException (10013): An attempt was made to access a socket in a way forbidden by its access permissions

.NET 7
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Unable to start Kestrel. Internal.Cryptograp

QUESTIONS
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Unable to start Kestrel. Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException: Cannot find the requested object. at Internal.Cryptography.Pal.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)

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[HTTP Error 500.30]: Failed to load coreclr.Exception message CLR worker thread exited prematurely

SERVERS
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Entity framework "InvalidCastException: Unable to

.NET 7
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Entity framework "InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.Decimal."

.NET 7
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How to use one appsettings.json file across muilti

TECHNOLOGY
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How to use one appsettings.json file across muiltiple applications

TECHNOLOGY
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[Solved] System.InvalidOperationException: 'Unable

QUESTIONS
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[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

QUESTIONS
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Nginx.service: Control process exited, code=exited

SERVER
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Nginx.service: Control process exited, code=exited status=1 (Failed to start LSB: Stop/start nginx)

SERVER
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Web API 415: Unsupported Media Type

TUTORIALS
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Web API 415: Unsupported Media Type

TUTORIALS
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HTTP Error 500.30 - ASPNET CORE app failed to star

.NET 7
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HTTP Error 500.30 - ASPNET CORE app failed to start

.NET 7
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InvalidOperationException: An error was generated

.NET 7
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InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation 'EntityName' specified in string based include path 'AnotherEntity Name'.

.NET 7
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HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Proce

.NET 7
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HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Process Start Failure

.NET 7
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Error MSB3021: Unable to copy file

.NET 7
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Error MSB3021: Unable to copy file

.NET 7
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Unhandled exception. System.InvalidOperationExcept

.NET 7
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Unhandled exception. System.InvalidOperationException: This platform doesn't support QUIC or HTTP3

.NET 7
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Ubuntu 23.10 Failed to start ssh.service - OpenBSD

LINUX
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Ubuntu 23.10 Failed to start ssh.service - OpenBSD Secure Shell Server

LINUX
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Unable to reattach to the process Visual Studio 20

.NET 7
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Unable to reattach to the process Visual Studio 2022

.NET 7
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Proxmox Cluster won't start [no corum]

SERVERS
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Proxmox Cluster won't start [no corum]

SERVERS
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Encountered end tag "div" with no matching start t

.NET 7
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Encountered end tag "div" with no matching start tag Are your start end tags properly balanced

.NET 7
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InvalidOperationException: Unable to resolve servi

QUESTIONS
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InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Mvc.IUrlHelper' while attempting to activate

QUESTIONS
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Linux service returns (code=exited, status=2)

LINUX
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Linux service returns (code=exited, status=2)

LINUX
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Retraining Machine Learning Model in Microsoft Mac

MACHINE LEARNING
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Retraining Machine Learning Model in Microsoft Machine Learning (ML.Net) Error

MACHINE LEARNING
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System.InvalidCastException: Unable to cast object

QUESTIONS
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System.InvalidCastException: Unable to cast object of type 'Microsoft.ML.Data.TransformerChain`1[Microsoft.ML.ITransformer]' to type 'Microsoft.ML.Data.TransformerChain`1[Microsoft.ML.Data.RegressionPredictionTransformer`1[Microsoft.ML.Trainers.LinearRegressionModelParameters]]'.

QUESTIONS
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How to change Application Start URL for Asp.Net Co

RESEARCH
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How to change Application Start URL for Asp.Net Core Application in Visual Studio

RESEARCH
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Video Encoding Dash Videos MPD file not working Tr

TECHNOLOGY
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Video Encoding Dash Videos MPD file not working Troubleshooting Techniques

TECHNOLOGY
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Connection Timeout Expired. The timeout period el

HOME
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Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake

HOME
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Solved!! Ruby on Rails Server Wont Start Error

TECHNOLOGY
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Solved!! Ruby on Rails Server Wont Start Error

TECHNOLOGY
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InvalidOperationException: Unable to resolve servi

.NET 7
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InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Http.IHeaderDictionary' while attempting to activate

.NET 7
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Micro-service application running inside Docker Co

DOCKER
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Micro-service application running inside Docker Container Error: IDX10803 and IDX10804 Unable to obtain configuration from: 'https://localhost/.well-known/openid-configuration'

DOCKER
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Unable to stop debugging. Operation not supported.

.NET 7
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Unable to stop debugging. Operation not supported. Unknown error: 0x800004005

.NET 7
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[Solved] Entity Framework Core (EF 6) Error: Unabl

ENTITY FRAMEWORK
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[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

ENTITY FRAMEWORK
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InvalidOperationException: Unable to resolve servi

.NET 7
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InvalidOperationException: Unable to resolve service for type 'System.IFormatProvider' while attempting to activate 'RepositoryService'.

.NET 7
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Sql Server Error: Unable to modify table. The co

SQL
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Sql Server Error: Unable to modify table. The conversion of a date data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

SQL
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[Asp.Net Core 3.1] Zebra Printer SDK C# Unable to

.NET 7
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[Asp.Net Core 3.1] Zebra Printer SDK C# Unable to Find "DiscoveredUsbPrinter"

.NET 7
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HTTP Error 502.5 - Process Failure: The current .N

NETWORK
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HTTP Error 502.5 - Process Failure: The current .Net SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.2 or lower. Visual Studio 2019 unable to locate .Net Core SDK

NETWORK
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We're unable to complete your request invalid_requ

SQL
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We're unable to complete your request invalid_request: The provided value for the input parameter 'redirect_uri' is not valid. The expected value is a URI which matches a redirect URI registered for this client application.

SQL
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Asp.Net Core 3.1 Dependency Injection Error Unable

.NET 7
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Asp.Net Core 3.1 Dependency Injection Error Unable to resolve service for type 'Microsoft.AspNetCore.Http.HttpContext

.NET 7
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Unable to bind to localhost on the IPv4 loopback i

.NET 7
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Unable to bind to localhost on the IPv4 loopback interface: An attempt was made to access a socket in a way forbidden by its access permission

.NET 7
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No matching IPassiveHealthCheckPolicy found for th

QUESTIONS
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No matching IPassiveHealthCheckPolicy found for the passive health check policy name 'TransportFailureRateHealthPolicy'

QUESTIONS
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Entity Framework Core Error: Unable to track an en

ENTITY FRAMEWORK
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Entity Framework Core Error: Unable to track an entity of type "Model Class Object" because primary key property 'id' is null

ENTITY FRAMEWORK
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Asp.Net Core 3.1 Entity Framework Core DateTime fi

.NET 7
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Asp.Net Core 3.1 Entity Framework Core DateTime field getting updated to 1/1/0001

.NET 7
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[SOLVED!! Entity Framework Error Asp.Net Core 3.1]

.NET 7
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[SOLVED!! Entity Framework Error Asp.Net Core 3.1] InvalidCastException: Unable to cast object of type 'Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryable`

.NET 7
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Cannot ping computer on same network

SERVERS
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Cannot ping computer on same network

SERVERS
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Internal Server Error 500 is not returned in Http

QUESTIONS
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Internal Server Error 500 is not returned in Http Response using Kestrel Web Server (White Screen of Death) AspNet 6

QUESTIONS
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resolv.conf no such file or directory

SERVERS
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resolv.conf no such file or directory

SERVERS
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An error was generated for warning 'Microsoft.Enti

ENTITY FRAMEWORK
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An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation specified in string based include path

ENTITY FRAMEWORK
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InvalidOperationException: An error was generated

ENTITY FRAMEWORK
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InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError

ENTITY FRAMEWORK
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docker: Cannot connect to the Docker daemon at uni

DOCKER
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docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.

DOCKER
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How to Develop Drupal 8, PHP and MySQ on Windows 1

LINUX
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How to Develop Drupal 8, PHP and MySQ on Windows 10 Linux Subsystem

LINUX
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[emerg] 28713#28713: open() "/var/run/nginx.pid" f

SERVERS
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[emerg] 28713#28713: open() "/var/run/nginx.pid" failed (13: Permission denied)

SERVERS
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Unable to start Kestrel

Unable to start Kestrel. System.InvalidOpera

Unable to start Kestrel. System.InvalidOperationException: Unable to configure HTTPS endpoint. No server certificate was specified, and the default developer certificate could not be found or is out of date

System.Net.Sockets.SocketException (10013): An att

System.Net.Sockets.SocketException (10013): An attempt was made to access a socket in a way forbidden by its access permissions

Unable to start Kestrel. Internal.Cryptograp

Unable to start Kestrel. Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException: Cannot find the requested object. at Internal.Cryptography.Pal.CertificatePal.FromBlobOrFile(ReadOnlySpan`1 rawData, String fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)

Debugging ASP.NET Core Applications: Accessing Kes

Debugging ASP.NET Core Applications: Accessing Kestrel from Remote Computers

[HTTP Error 500.30]: Failed to load coreclr.Except

[HTTP Error 500.30]: Failed to load coreclr.Exception message CLR worker thread exited prematurely

Entity framework "InvalidCastException: Unable to

Entity framework "InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.Decimal."

How to use one appsettings.json file across muilti

How to use one appsettings.json file across muiltiple applications

[Solved] System.InvalidOperationException: 'Unable

[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

Nginx.service: Control process exited, code=exited

Nginx.service: Control process exited, code=exited status=1 (Failed to start LSB: Stop/start nginx)

Web API 415: Unsupported Media Type

Web API 415: Unsupported Media Type

HTTP Error 500.30 - ASPNET CORE app failed to star

HTTP Error 500.30 - ASPNET CORE app failed to start

InvalidOperationException: An error was generated

InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation 'EntityName' specified in string based include path 'AnotherEntity Name'.

HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Proce

HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Process Start Failure

Error MSB3021: Unable to copy file

Error MSB3021: Unable to copy file

Unhandled exception. System.InvalidOperationExcept

Unhandled exception. System.InvalidOperationException: This platform doesn't support QUIC or HTTP3

Ubuntu 23.10 Failed to start ssh.service - OpenBSD

Ubuntu 23.10 Failed to start ssh.service - OpenBSD Secure Shell Server

Unable to reattach to the process Visual Studio 20

Unable to reattach to the process Visual Studio 2022

Proxmox Cluster won't start [no corum]

Proxmox Cluster won't start [no corum]

Encountered end tag "div" with no matching start t

Encountered end tag "div" with no matching start tag Are your start end tags properly balanced

InvalidOperationException: Unable to resolve servi

InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Mvc.IUrlHelper' while attempting to activate

Linux service returns (code=exited, status=2)

Linux service returns (code=exited, status=2)

Retraining Machine Learning Model in Microsoft Mac

Retraining Machine Learning Model in Microsoft Machine Learning (ML.Net) Error

System.InvalidCastException: Unable to cast object

System.InvalidCastException: Unable to cast object of type 'Microsoft.ML.Data.TransformerChain`1[Microsoft.ML.ITransformer]' to type 'Microsoft.ML.Data.TransformerChain`1[Microsoft.ML.Data.RegressionPredictionTransformer`1[Microsoft.ML.Trainers.LinearRegressionModelParameters]]'.

How to change Application Start URL for Asp.Net Co

How to change Application Start URL for Asp.Net Core Application in Visual Studio

Video Encoding Dash Videos MPD file not working Tr

Video Encoding Dash Videos MPD file not working Troubleshooting Techniques

Connection Timeout Expired. The timeout period el

Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake

Solved!! Ruby on Rails Server Wont Start Error

Solved!! Ruby on Rails Server Wont Start Error

InvalidOperationException: Unable to resolve servi

InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.Http.IHeaderDictionary' while attempting to activate

Micro-service application running inside Docker Co

Micro-service application running inside Docker Container Error: IDX10803 and IDX10804 Unable to obtain configuration from: 'https://localhost/.well-known/openid-configuration'

Unable to stop debugging. Operation not supported.

Unable to stop debugging. Operation not supported. Unknown error: 0x800004005

[Solved] Entity Framework Core (EF 6) Error: Unabl

[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

InvalidOperationException: Unable to resolve servi

InvalidOperationException: Unable to resolve service for type 'System.IFormatProvider' while attempting to activate 'RepositoryService'.

Sql Server Error: Unable to modify table. The co

Sql Server Error: Unable to modify table. The conversion of a date data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

[Asp.Net Core 3.1] Zebra Printer SDK C# Unable to

[Asp.Net Core 3.1] Zebra Printer SDK C# Unable to Find "DiscoveredUsbPrinter"

HTTP Error 502.5 - Process Failure: The current .N

HTTP Error 502.5 - Process Failure: The current .Net SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.2 or lower. Visual Studio 2019 unable to locate .Net Core SDK

We're unable to complete your request invalid_requ

We're unable to complete your request invalid_request: The provided value for the input parameter 'redirect_uri' is not valid. The expected value is a URI which matches a redirect URI registered for this client application.

Asp.Net Core 3.1 Dependency Injection Error Unable

Asp.Net Core 3.1 Dependency Injection Error Unable to resolve service for type 'Microsoft.AspNetCore.Http.HttpContext

Unable to bind to localhost on the IPv4 loopback i

Unable to bind to localhost on the IPv4 loopback interface: An attempt was made to access a socket in a way forbidden by its access permission

No matching IPassiveHealthCheckPolicy found for th

No matching IPassiveHealthCheckPolicy found for the passive health check policy name 'TransportFailureRateHealthPolicy'

Entity Framework Core Error: Unable to track an en