


Why Does 'Login failed for user 'IIS APPPOOL\ASP.NET v4.0'' Occur When Migrating to IIS 7?
Jan 23, 2025 pm 05:31 PMIIS 7 login error: "IIS APPPOOLASP.NET v4.0" login failed
When migrating a web application from CASSINI to IIS 7, users may encounter the error "Login failed for user 'IIS APPPOOLASP.NET v4.0'" when accessing the site.
Error reason
This error usually occurs when the IIS APPPOOLASP.NET v4.0 user does not have login permissions for the database used by the application.
Solution
To resolve this issue, please follow these steps:
-
Create login in MS SQL Server:
- Open SQL Server Management Studio (SSMS) and connect to the instance hosting the database.
- Expand the Security node in Server Object Explorer.
- Right-click on "Logins" and select "New Login..."
- Enter 'IIS APPPOOLASP.NET v4.0' as the login name and click OK.
-
Grant database permissions:
- Right-click on the login created in step 1 and select Properties.
- Go to the User Mapping tab.
- Check the appropriate checkboxes to grant permissions to the database and necessary roles. For example, db_datareader and db_datawriter.
-
Refresh IIS configuration:
- In Internet Information Services (IIS) Manager, navigate to the application's site and pool.
- Recycle the application pool to refresh the configuration.
Other notes:
- If the application uses stored procedures, make sure the 'db_execute' permission is granted to the application pool login.
- If the error persists after performing these steps, check that the appropriate firewall rules have been set up to allow connections from the web server to the database.
The above is the detailed content of Why Does 'Login failed for user 'IIS APPPOOL\ASP.NET v4.0'' Occur When Migrating to IIS 7?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Yes, function overloading is a polymorphic form in C, specifically compile-time polymorphism. 1. Function overload allows multiple functions with the same name but different parameter lists. 2. The compiler decides which function to call at compile time based on the provided parameters. 3. Unlike runtime polymorphism, function overloading has no extra overhead at runtime, and is simple to implement but less flexible.

C has two main polymorphic types: compile-time polymorphism and run-time polymorphism. 1. Compilation-time polymorphism is implemented through function overloading and templates, providing high efficiency but may lead to code bloating. 2. Runtime polymorphism is implemented through virtual functions and inheritance, providing flexibility but performance overhead.

Yes, polymorphisms in C are very useful. 1) It provides flexibility to allow easy addition of new types; 2) promotes code reuse and reduces duplication; 3) simplifies maintenance, making the code easier to expand and adapt to changes. Despite performance and memory management challenges, its advantages are particularly significant in complex systems.

C destructorscanleadtoseveralcommonerrors.Toavoidthem:1)Preventdoubledeletionbysettingpointerstonullptrorusingsmartpointers.2)Handleexceptionsindestructorsbycatchingandloggingthem.3)Usevirtualdestructorsinbaseclassesforproperpolymorphicdestruction.4

People who study Python transfer to C The most direct confusion is: Why can't you write like Python? Because C, although the syntax is more complex, provides underlying control capabilities and performance advantages. 1. In terms of syntax structure, C uses curly braces {} instead of indentation to organize code blocks, and variable types must be explicitly declared; 2. In terms of type system and memory management, C does not have an automatic garbage collection mechanism, and needs to manually manage memory and pay attention to releasing resources. RAII technology can assist resource management; 3. In functions and class definitions, C needs to explicitly access modifiers, constructors and destructors, and supports advanced functions such as operator overloading; 4. In terms of standard libraries, STL provides powerful containers and algorithms, but needs to adapt to generic programming ideas; 5

Polymorphisms in C are divided into runtime polymorphisms and compile-time polymorphisms. 1. Runtime polymorphism is implemented through virtual functions, allowing the correct method to be called dynamically at runtime. 2. Compilation-time polymorphism is implemented through function overloading and templates, providing higher performance and flexibility.

C polymorphismincludescompile-time,runtime,andtemplatepolymorphism.1)Compile-timepolymorphismusesfunctionandoperatoroverloadingforefficiency.2)Runtimepolymorphismemploysvirtualfunctionsforflexibility.3)Templatepolymorphismenablesgenericprogrammingfo

C polymorphismisuniqueduetoitscombinationofcompile-timeandruntimepolymorphism,allowingforbothefficiencyandflexibility.Toharnessitspowerstylishly:1)Usesmartpointerslikestd::unique_ptrformemorymanagement,2)Ensurebaseclasseshavevirtualdestructors,3)Emp
