login failed for user microsoft sql server error 18456

Tags: style blog http color os file data ioRecently trying to learn ASP. NET MVC, when you click Add-New Item--visual in the data under C # to the ADO Entity Data Model, and the "Select Your data connection" error occurs, the " An error occurred in Microsoft SQL Server Compa

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Tags: manipulating style max snippet multiple statement results one SouthOriginal: SQL Server updatable subscription Queue Reader Agent error: An attempted insert or update has failedToday it is found that the Queue Reader Agent keeps trying to start but always goes wrong:The contents are as follows:This may be caused by another problem that has just been dealt w

Before using SQL Server 2005 encountered a similar problem, the database in the other server backup, in the machine can not be restored, this time finally found a solution, the online did not find similar, hope to help everyone!1. Detach the local database of the same name2, after the separation right-click database Select Restore Database-"original device-" Add

Tags: Index reinstall nbsp Date directly resolves Operation server updateServer reload system, reinstall on SQL Server, attach to previous database,Then there was a login for each database that was used to manipulate the database, and the other databases were not operational.Attached to the database after the

Tags: User login class Visual resolve log limit image Alt This happens sometimes when you install SQLServer2005 (or the SQLServer2005 that comes with Visual Studio 2008) with SQL Server authentication: The reason for this error is that when you install

Label:Workaround:(1). My Computer--control Panel--management tool--service--right-click mssqlserver--Properties--Login--Login identity--select "Local System Account".(2). My Computer--control Panel--management tool--service--right-click mssqlserver--Properties--Login--Login status--select "This Account"--Enter your mod

SQL Server always on switch host after login and user cannot match, looked for a long time no solution was found, and later asked Microsoft, said that because login in the login host

Error 21002:[SQL-DMO] User * * * There is already an error This error occurs due to the fact that a MSSQL backup was migrated to another server restore. The main reason is that the original backup restored the original user's info

It is convenient to add out-of-the-box databases with additional functionality, but sometimes additional database failures occur. So, how do we resolve this issue?There are two ways to solve this problem"First Method"First step: Locate the . mdf file to which you want to add the database, right -click and select Properties .Second step: Click Security on the Properties page, select authenticated Users, click EditStep Three: Authenticated Users to select Full Control , click OK, click on the prop

. Otherwise, it is not readable from the corrupted table. This table fixes the method also does not have the use. use the name of the database entity that needs to be repaired declare @dbname varchar (255) Set@dbname ='name of the database to be repaired'exec sp_dboption @dbname,'Single user','true'DBCC CHECKTABLE ('name of the data table to be repaired', Repair_allow_data_loss) DBCC CHECKTABLE ('name of the data table to be repaired', Repair_rebui

Error 21002: [SQL-DMO] user "XXX" already exists, how to solve it! Urgent !!!! Delete XXX from database sysusers Update: Correspond login users to isolated database usersIn fact, after we have created a database login user wi

, this error is precisely in a very basic point-the right.The database was created by me before the database was copied, so the permissions are here for me and are duly completed. But after I manually copy the file, the permissions will be very difficult for me-the fact is, click on the properties, click on the "Security" tab, point to their own users, see the following permissions, presumably everything is understood-this file, I do not control its p

Failure where SQL Server cannot be started-[Error 1069 service cannot be started due to login failure] -- Has the operating system password been changed? -- Solve the problem that SQL cannot be started due to changing the operating system password: 1. My computer -- contr

Problem Description: When attaching data, you are prompted not to open the physical file, operating system error 5. The following figure: Problem reason: May be a problem with file access permissions. Solution: Locate the MDF and LDF files for the database, and grant permissions . The following figure: Find MDF and LDF files, this demo takes LDF as an example. 1. Click the file right key property--> Security--> Edit 2. Edit--> Add 3. Add-

background : When you recently migrated SQL Server database 2008, when you created a user mapping. SQL Server error: User, group, or role ' XXX ' already exists in the current databas

Microsoft SQL Server error: 15138 Delete failed for user, database principal has schema in this database, cannot delete 　　Solution OneFirst delete the schema for this user, and then del

Tags: SQL Server error 18452Sometimes this happens when you install SQLServer2005 (or the SQLServer2005 that comes with Visual Studio 2008) with SQL Server authentication:The reason for this error is that when you install

Label:Fix SQL Server 2008 error 15023: User or role already exists in the current database, SQLServer2008, error 15023,When using SQL Server 2008, we often encounter a situation where a

The user default database could not be opened and the login failed because the default database for the login account was deleted. The workaround is to use the Administrator account to modify the default database for this login account. 1. Log in to Enterprise Manager using