Sorry if I was not clear.
I downloaded the original TOC index as a .zip file from the website in 2016. It was unzipped onto my PC.
I have used it from time to time since then.
The last time that I tried to use it, it did not work. I assumed that it had possibly been superseded so went to the site to see if there was something there. I found the link to Tech-Torque downloads with the form to complete to request the download link and instructions. I never received a reply. In hindsight, I suspect that the virus was blocking access to the files.
I have just rechecked my files and the original .zip is still on my machine and virus free. I have re-installed it on my PC and it works OK but only has a database going up to Volume 39 (2015).
I have rescanned after re-installation and it is clear.
If nobody else has a problem, I assume that this was a random file selection for a trojan attack.
I would still like to download the latest version to give me access to the latest articles.
I would also like to download the Slough Technical Notes.
I will fill in the request form again.
I hope this clarifies the situation.
Roger_G