Why do I get the error message ‘System.InvalidOperationException: Application is restarting’
This problem occurs because of some antivirus applications write back information to the files that they scan. Every time a user changes the Web.config configuration file, the Global.asax file, or the contents of the Bin folder, the application should restart to incorporate these changes. Because antivirus scanning changes cannot be distinguished from the user’s file changes, the application restarts when the antivirus software scans these folders. Note This problem may occur even when no error is returned. If the virus-scanning software triggers change notifications, every change notification is doubled at the very least: one real change notification and an additional change notification from the antivirus software some time later. For more information refer PRB: Random application restarts with ‘Application is restarting’ error in ASP.NET
When I install the Microsoft .NET Framework 1.1 on a computer that is running Windows XP, and then you start Windows, the Welcome screen appears. This screen prompts me to click your user name to start Windows.Why?
When you install the .NET Framework 1.1, a hidden local user account that is named ASPNET is created. When you start Windows, Windows treats the ASPNET local user account as an additional user account, although the ASPNET user account is hidden. Therefore, the Welcome screen appears and prompts you to click your user name. For more details refer KB 827072
Why do I get error message ‘It is already opened exclusively by another user, or you need permission to view its data.’ when I try to open Access mdb
The ASPNET worker process doesn’t have the correct permissions to connect to or write to the Access database. Either enable impersonation for users or configure the ASP.NET worker process to run under the SYSTEM account. You can also grant read and write permissions for the ‘Everyone’ group on the database and the database folder. For more details refer PRB: Cannot connect to Access database from ASP.NET Process and request identity in ASP.NET
Why do I get error message ‘Login failed for user ‘(null)’. Reason: Not associated with a trusted SQL Server connection’
This error usually indicates that SQLServer (or MSDE) is configured to use Windows Authentication. If you want to use a SQL login, you will need to enable SQL Authentication (mixed mode authentication). For more details refer PRB: ASP/ODBC/SQL Server Error 0x80040E4D ‘Login Failed for User ’(Null)’’
Why do I get error message ‘Unable to start debugging on the web server. The debugger is not properly installed. Run setup to install or repair the debugger. Would you like to disable future attempts to debug ASP.NET pages for this project ? ‘
If someone has run a lockdown or other security tool on the Web server, the DEBUG method may have been removed. Go into IIS manager to the Web application’s properties and Directory >Configuration (button) > Mappings > Application mappings. Check that for .aspx extensions, you allow GET,HEAD,POST,DEBUG Of course you need to be a member of the Debuggers group on the remote server. To resolve error Right-click the Project Name in Solution Explorer, and then click Properties. In the left pane of Properties, click to select Configuration Properties. Click to select Debugging. In the right pane, change the value of Enable Unmanged Debugging to True (on the drop-down list). For more details refer PRB: Error Message: Unable to Start Debugging. Unable to Start Program …