HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Nmesa, download the full version from the website:
https://sites.google.com/site/heroes3hd/rus/download
install it on top of your existing version
make sure that the following 2 update servers are specified in the file \_HD3_Data\Settings\#common.ini:

"http://h3hota.com/HD/Update",
"http://heroes3towns.com/HD/Update"

update

- this recipe is universal and is recommended for use with any update issues.