Find the site where you want to go and compare the address to your bookmark.
If your bookmark is different change it.
Cnet did this to me a short time ago.
Bookmarks I had used for years were slightly different and became iffy.
Why does this happen?......beats me.
I have difficulty getting on to my often used sites, The address is changed or shortened, taking me to a site that is part of the address I want, or an error message.
This has been occurring for 2 days.
Any and all advice gratefully accepted. thanks!