All the normal windows updates succeed. I did have major troubles installing SQL Server Express.

http://www.sevenforums.com/general-discussion/380691-can-user-have-ownership-c-windows-temp-folder.html

Avast was blocking writes to windows\temp folder.

So could it be related?

Hello,

I have seen many users (most of them Windows 10 users) complaining about Avast because Avast locks down permissions on many folders on the computer and SQL Server needs to update permissions on folders.

Hope this helps.

Regards,

Alberto Morillo
SQLCoffee.com

• Edited by Alberto MorilloMVP, Moderator 8 hours 17 minutes ago

Did you have the same issue when you lgged in as Administrator.

You can do couple of things. Disable Avast until you complete the updates

or give permissions to everyone on the temp folder.