S SG0001 Member Joined Nov 29, 2019 Posts 20 Nov 29, 2019 #1 I really want to upgrade Windows 7 to Windows 10 but this has failed about 3 times with just a simple message saying Windows 10 upgrade failed. I have tried switching off current anti-virus (MSE) and firewall and other tips but no luck. I read that Windows 7 needs to be up to date for the upgrade to succeed and I knew that some updates on this pc had been failing since November 2018. I also think this coincides with me removing Avast anti-virus and replacing with MSE. I suspect the removal of Avast is probably causing all my problems. Update KB4467107 (Nov 18 quality roll up) was the first one to fail with error code 8000FFFF since then some updates have succeeded but the main quality roll up does not. At the moment I am stuck on KB4516065 (Sep 19 quality roll up) which fails with error code 80092004. I have run all the diagnostics suggested by Microsoft and tried to manually reinstall both 4467107 and 4516065 but they continue to fail. My CBS.zip is 10mb so the link to download from WeTransfer is CBS.zip I would really appreciate any help you can give.