Here's a screenshot of the Run Task showing HTTP links.
And there are many instances of the Run Task showing up entries I haven't typed before, like ms-settings:network-vpn and so on. I wondered if this is related.
Anyway, how do I remove them?
Use regedit
to edit your RUN history:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU