Login – Domain Web Center

Login failed for user IIS APPPOOL\DefaultAppPool

2026-02-22 Udar Gromov 1

You are trying to jumpstart an existing ASP.NET site on a new IIS 7.5 server under Windows 7 or under Windows 2008 R2, and you are getting this error message: Cannot open database “YourDB” requested by the login. The login failed. Login failed for user ‘IIS APPPOOL\DefaultAppPool’. The problem is […]

Cannot open database … requested by the login. The login failed.

2026-02-09 Udar Gromov 2

Cannot open database “Your_DB” requested by the login. The login failed.
Login failed for user ‘NT AUTHORITYNETWORK SERVICE’.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Cannot open database “Your_DB” requested by the login. The login failed.
Login failed for user ‘NT AUTHORITYNETWORK SERVICE’.

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How Robots Bypass User Registration and How to Stop Them

2026-02-07 Udar Gromov 0

This article addresses the problem of robot user registrations on all WordPress versions including WP 3.3.1. I would be very interested to hear, what is the purpose of registering all these users, what is the goal? Did you notice that despite your best efforts to allow only human registrations, the […]

Login failed for user ‘YourPC\ASPNET’

2026-01-11 Udar Gromov 0

You are trying to access your ASP.NET page and getting this message: Cannot open database “YourDB” requested by the login. The login failed. Login failed for user ‘YourPC\ASPNET’. Use SQL Manager, navigate to Security ==> Logins. Double click on ASPNET user and go to User Mapping. Select YourDB and […]