I've been downloading CanTopo top maps on Windows 10 and Chrome this way... works for me and with no real expertise here.
Go to the zoom-in map page:
http://ftp.geogratis.gc.ca/pub/nrcan_rn ... ex_en.htmlOn the left side, select "Themes", then "Raster"...
Select 1:50,000 (or another scale)...
Zoom in for the top map you want...
This gets a little weird now, took me a while to figure it out but it works for me, can't say why this needs to be done (no expertise, advice needed)... so right click on the 1:50,000 map sheet, then double left-click - this should turn the selected map orange. Not right-clicking won't turn it orange to select with double-left clicking... hmmm.
Hit the download link that appears...
Select a PDF Cantopo map (tiff won't open for me).
It should download and then open with the PDF viewer to view.
Hit save file, give it a name and keep in Documents or Downloads folder or wherever.
For some reason the tiff files can't be opened in Windows 10, the PDFs work fine and that's as far as I'm gonna go with it... good luck, hope it works.
PS... it's easier with Avenza, but it seems their maps can't be downloaded and stored... still new, needs work.