Follow the below steps:-
1. Login to the "SQL Server Configuration Manager".
2. Select "SQL Server Services".
3. Select "SQL Server(SQLEXPRESS)" then right click select "Properties".
4. Select "LogOn" tab.
5. Select "Built-in account" option with "Local System".
6. Click "Ok"
For More information see the attachment.
1. Login to the "SQL Server Configuration Manager".
2. Select "SQL Server Services".
3. Select "SQL Server(SQLEXPRESS)" then right click select "Properties".
4. Select "LogOn" tab.
5. Select "Built-in account" option with "Local System".
6. Click "Ok"
For More information see the attachment.