system
4
I’ve been getting the same behaviour over the last few days. Interestingly, at the same time (1) Chrome has ceased to be my default browser (I’ve begun to use Sketchup, and the online help system opens in Firefox instead), and (2) when I open Chrome, the first page I see is Delta Search. I went into Chrome’s Settings page, and it says that Chrome IS the default browser, and that on startup, I should get the New Tab page. Curious. I removed Delta Search from my registered search engines, but it still comes up as the first page in my browsing session. OK, I got Avast to run a full scan. It told me there were threats, and I couldn’t see any reason for keeping the files it thought were suspicious, so I deleted those and rebooted. It hasn’t changed anything - WSC still reports Avast as turned off (and as the OP reported, trying to turn it on again does nothing), and I still get Delta Search as my startup page.