Hello guys,I've got a really irritating problem.After uninstalling pre-release of .Net4 i cannot install the final version,it keeps complaining about previous version not removed.Any ideas on how to fix this? A few logs: [5/2/2010, 10:38:11] Starting install of item 'necessary components for .NET Framework' at tickCount = 3579265 [5/2/2010, 10:38:11] evaluating IsPresent: [5/2/2010, 10:38:11] Exists: evaluating ... [5/2/2010, 10:38:11] MsiGetProductInfo with product code {3C3901C5-3455-3E0A-A214-0B093A5070A6} found no matches [5/2/2010, 10:38:11] Exists evaluated to false [5/2/2010, 10:38:11] Starting install of item '.NET Framework 4 Client Profile' at tickCount = 3579359 [5/2/2010, 10:38:14] WM_ACTIVATEAPP: Focus stealer's windows was NOT visible, taking back focus [5/2/2010, 10:38:14] WM_ACTIVATEAPP: Focus stealer's windows was NOT visible, taking back focus [5/2/2010, 10:38:17] evaluating IsPresent: [5/2/2010, 10:38:17] returning false [5/2/2010, 10:38:17] evaluating IsPresent: [5/2/2010, 10:38:17] returning false [5/2/2010, 10:38:17] evaluating IsPresent: [5/2/2010, 10:38:17] returning false [5/2/2010, 10:38:17] evaluating IsPresent: [5/2/2010, 10:38:17] returning false [5/2/2010, 10:38:17] evaluating IsPresent: [5/2/2010, 10:38:17] Exists: evaluating ... [5/2/2010, 10:38:17] MsiGetProductInfo with product code {3C3901C5-3455-3E0A-A214-0B093A5070A6} found no matches [5/2/2010, 10:38:17] Exists evaluated to false [5/2/2010, 10:38:6] calling PerformAction on an installing performer [5/2/2010, 10:38:6] Action: Performing actions on all Items ... [5/2/2010, 10:38:6] Wait for Item (SetupUtility.exe) to be available [5/2/2010, 10:38:7] SetupUtility.exe is now available to install [5/2/2010, 10:38:7] Creating new Performer for Exe item [5/2/2010, 10:38:7] Created new ExePerformer for Exe item [5/2/2010, 10:38:7] Action: Performing Action on Exe at C:\1e42b8f9e5d829d2a5636e7b3439b2\SetupUtility.exe ... [5/2/2010, 10:38:7] Launching CreateProcess with command line = SetupUtility.exe /aupause [5/2/2010, 10:38:8] Exe log file(s) : [5/2/2010, 10:38:8] C:\Users\Eth\AppData\Local\Temp\dd_SetupUtility.txt [5/2/2010, 10:38:8] Log File C:\Users\Eth\AppData\Local\Temp\dd_SetupUtility.txt exists and will be added to the Watson upload list [5/2/2010, 10:38:8] Exe (C:\1e42b8f9e5d829d2a5636e7b3439b2\SetupUtility.exe) succeeded. [5/2/2010, 10:38:8] Exe Log File: dd_SetupUtility.txt [5/2/2010, 10:38:8] Action complete [5/2/2010, 10:38:8] Error 0 is mapped to Custom Error: [5/2/2010, 10:38:8] Wait for Item (clr_optimization_v2.0.50727_32) to be available [5/2/2010, 10:38:8] clr_optimization_v2.0.50727_32 is now available to install [5/2/2010, 10:38:8] Creating new Performer for ServiceControl item [5/2/2010, 10:38:8] Action: ServiceControl - Stop clr_optimization_v2.0.50727_32 ... [5/2/2010, 10:38:8] ServiceControl operation succeeded! [5/2/2010, 10:38:8] Action complete [5/2/2010, 10:38:8] Error 0 is mapped to Custom Error: [5/2/2010, 10:38:8] Wait for Item (Windows6.1-KB958488-v6001-x86.msu) to be available [5/2/2010, 10:38:8] Windows6.1-KB958488-v6001-x86.msu is now available to install [5/2/2010, 10:38:8] Creating new Performer for Exe item [5/2/2010, 10:38:8] Created new ExePerformer for Exe item [5/2/2010, 10:38:8] WU Service was already enabled or was running [5/2/2010, 10:38:8] WU Service: EnsureWUServiceIsNotDisabled succeeded [5/2/2010, 10:38:8] Action: Performing Action on Exe at C:\1e42b8f9e5d829d2a5636e7b3439b2\Windows6.1-KB958488-v6001-x86.msu ... [5/2/2010, 10:38:8] Launching CreateProcess with command line = wusa.exe "C:\1e42b8f9e5d829d2a5636e7b3439b2\Windows6.1-KB958488-v6001-x86.msu" /quiet /norestart [5/2/2010, 10:38:11] Exe (C:\1e42b8f9e5d829d2a5636e7b3439b2\Windows6.1-KB958488-v6001-x86.msu) failed with 0x240006 - (null). [5/2/2010, 10:38:11] PerformOperation on exe returned exit code 2359302 (translates to HRESULT = 0x240006) [5/2/2010, 10:38:11] Action complete [5/2/2010, 10:38:11] Error 0x240006 is mapped to Custom Error: Success [5/2/2010, 10:38:11] Overwrite the current error to S_OK. [5/2/2010, 10:38:11] Wait for Item (SetupUtility.exe) to be available [5/2/2010, 10:38:11] SetupUtility.exe is now available to install [5/2/2010, 10:38:11] Creating new Performer for Exe item [5/2/2010, 10:38:11] Created new ExePerformer for Exe item [5/2/2010, 10:38:11] Action: Performing Action on Exe at C:\1e42b8f9e5d829d2a5636e7b3439b2\SetupUtility.exe ... [5/2/2010, 10:38:11] Launching CreateProcess with command line = SetupUtility.exe /screboot [5/2/2010, 10:38:11] Exe log file(s) : [5/2/2010, 10:38:11] C:\Users\Eth\AppData\Local\Temp\dd_SetupUtility.txt [5/2/2010, 10:38:11] Log File C:\Users\Eth\AppData\Local\Temp\dd_SetupUtility.txt exists and will be added to the Watson upload list [5/2/2010, 10:38:11] Exe (C:\1e42b8f9e5d829d2a5636e7b3439b2\SetupUtility.exe) succeeded. [5/2/2010, 10:38:11] Exe Log File: dd_SetupUtility.txt [5/2/2010, 10:38:11] Action complete [5/2/2010, 10:38:11] Error 0 is mapped to Custom Error: [5/2/2010, 10:38:11] Wait for Item (netfx_Core.mzz) to be available [5/2/2010, 10:38:11] netfx_Core.mzz is now available to install [5/2/2010, 10:38:11] Created new DoNothingPerformer for File item [5/2/2010, 10:38:11] No CustomError defined for this item. [5/2/2010, 10:38:11] Wait for Item (netfx_Core_x86.msi) to be available [5/2/2010, 10:38:11] netfx_Core_x86.msi is now available to install [5/2/2010, 10:38:11] Creating new Performer for MSI item [5/2/2010, 10:38:11] Action: Performing Action on MSI at C:\1e42b8f9e5d829d2a5636e7b3439b2\netfx_Core_x86.msi ... [5/2/2010, 10:38:11] Log File C:\Users\Eth\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_20100502_103800879-MSI_netfx_Core_x86.msi.txt does not yet exist but may do at Watson upload time [5/2/2010, 10:38:11] Calling MsiInstallProduct(C:\1e42b8f9e5d829d2a5636e7b3439b2\netfx_Core_x86.msi, EXTUI=1 [5/2/2010, 10:38:14] Returning 0. INSTALLMESSAGE_RESOLVESOURCE [1: 0 2: netfx_Core_x86.msi 3: {B8742BE5-6238-3EC0-A9B9-CD562E054A54} 4: {B8742BE5-6238-3EC0-A9B9-CD562E054A54}; 5: 0 6: 1 7: 1 8: 0 ] [5/2/2010, 10:38:17] Returning IDOK. INSTALLMESSAGE_ERROR [The older version of Microsoft .NET Framework 4 Client Profile cannot be removed. Contact your technical support group. ] [5/2/2010, 10:38:17] MSI (C:\1e42b8f9e5d829d2a5636e7b3439b2\netfx_Core_x86.msi) Installation failed. Msi Log: Microsoft .NET Framework 4 Setup_20100502_103800879-MSI_netfx_Core_x86.msi.txt [5/2/2010, 10:38:17] PerformOperation returned 1603 (translates to HRESULT = 0x80070643) [5/2/2010, 10:38:17] Action complete [5/2/2010, 10:38:17] OnFailureBehavior for this item is to Rollback. [5/2/2010, 10:38:17] Action: Performing actions on all Items ... [5/2/2010, 10:38:17] Action complete [5/2/2010, 10:38:17] Action complete [5/2/2010, 10:38:17] Final Result: Installation failed with error code: (0x80070643), "Fatal error during installation. " (Elapsed time: 0 00:00:17). [5/2/2010, 10:38:19] WM_ACTIVATEAPP: Focus stealer's windows WAS visible, NOT taking back focu

It doesn't complain about previous version not being removed, it announces that it is unable to remove previous version. Subtle but important difference. Maybe install previous version again and simply let the new version overwrite/delete the old one...

Hi, Below are the options to remove the existing software, 1. Try to use uninstall utility with the product code. 2. Use microsoft (seprate download package) or 3rd party un-installer program. After removing the software, clean up your registry for the pervious software enteries. That's all. Your PC will be ready for new installation. -AJ http://www.aloysiusjegan.in