TurboTax FAQ
TurboTax FAQ
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Error: "System.Runtime.Serialization.SerializationException" when updating TurboTax for Windows

When attempting to update TurboTax installed on Windows 7 or 8, the following error message occurs:

System.Runtime.Serialization.SerializationException: Type
'System.Data.SqlServerCe.SqlCeErrorCollection' in assembly
'System.DataSqlServerCe, Version=
(version number may vary)

This issue may occur if Microsoft SQL Server Compact 4.0 is not fully installed.


To resolve this issue, close TurboTax and then click here to download and install SQL Server Compact 4.0 from Microsoft's website.

When finished, reopen TurboTax and try updating again by choosing Check for Updates from the Online menu in TurboTax.

Note: If you receive an Unhandled Exception error after installing SQL Server Compact 4.0, do this:

  1. Open Windows Explorer and browse to the location C:\
  2. Program Data\Intuit\Common\Update Service\v4\Global.
  3. Right-click the Global.sdf file and choose Properties.
  4. Click the Security tab.
  5. In the Group or user names area, select your username and click the Edit button.
  6. In the new window, select the Allow checkbox that corresponds to Full Control, and then click OK twice to close the windows.
  7. Try updating TurboTax again.