I have tried installing Windows 7 SP1 via Windows Update, the recommended option by Microsoft. It says updates installed successfully, but after reboot I get a not successfull dialog box and Error: ERROR_TRANSACTIONAL_CONFLICT(0x80071a90).
I followed the link to go online to learn more, followed and ran the troubleshooter in Control Panel.
Tried installing SP1 again using Windows Update. Again successful, but after reboot again same error message.
I have no anti-virus software. This is the first time I am getting this error message.