DEBUG: Error 2769: Custom Action CA_InstallAssemblyDef.3643236F_FC70_11D3_A536_0090278A1BB8 did not close 2 MSIHANDLEs.

While installing .Net Framework 3.5 / .Net Framework 2.0 /any other patches, it may fail with the following error message: DEBUG: Error 2769:  Custom Action CA_InstallAssemblyDef.3643236F_FC70_11D3_A536_0090278A1BB8 did not close 2 MSIHANDLEs. From the MSI verbose log: MSI (s) (78:A0) [15:48:43:802]: Executing op: ActionStart(Name=CA_InstallAssemblyDef.3643236F_FC70_11D3_A536_0090278A1BB8,,) MSI (s) (78:A0) [15:48:43:802]: Executing op: CustomActionSchedule(Action=CA_InstallAssemblyDef.3643236F_FC70_11D3_A536_0090278A1BB8,ActionType=1025,Source=BinaryData,Target=InstallAssembly ,CustomActionData=c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Web.dll;5242880) MSI (s) (78:18) [15:48:44:052]:…

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