My PC has suddenly (but not particularly recently) stopped carrying out downloads. Running Windows 7 Home Premium, with McAfee AV/Firewall etc. I have not changed the Firewall settings, nor the permissions. It appears that Windows updates download OK, but McAfee has not updated itself since early October, and I cannot download files from websites. I can open files attached to emails.
I use Google Chrome and Thunderbird. Have tried using Firefox but no different. IE won't open in my normal profile (which has administrator status) but will when I use the "pure" administrator profile - again, no difference. I have tried turning firewall off, but made no difference. I looked to go back to an old restore point, but the oldest was more recent than the problem!
Any thoughts?