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Under the hood, SQL Server doesn't track domain accounts by name but actually by SID. &nbsp;You're going to need to delete the domain account from your SQL server and then recreate it.
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Good Evening,<br />
<br />
I am having troubles on trying to access my SQL 2008 Express databases. We accidently removed the domain user account and recreated the account and now we are not able to access one of our databases. Is there a simple fix for this?
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Good Evening,

I am having troubles on trying to access my SQL 2008 Express databases. We accidently removed the domain user account and recreated the account and now we are not able to access one of our databases. Is there a simple fix for this?

SQL 2008 Express

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.