Hello. My friend and I decided to try playing HoM&M 3 through Gameranger. I can create a lobby in the game itself without any problems, but my friend gets an error message: "failed to start game error 58". He has Windows 10, and we have the same version of the game (installed from the same installer). What needs to be done to fix the error and allow us to play together?

What is the minimum damage value in numbers? Can you provide a screenshot or a save file? Are you using the game in its vanilla state or with the HD mod? Are you also using the SOD_SP plugin for the HD mod (it has many settings)? Is HD+ mode enabled in the HD mod?

This is what is written in FizMig:
Fortification defenses of the city and their assault.
The formula for calculating the base damage dealt by the central tower of a specific city is as follows:
Damage = D + d * N
where D is the base damage of the central tower = 10...15 units
d is the additional damage that the ranged tower gains when building another "structure"
N is the number of "structures" that have already been built in the city.
In an "empty" city (Rural Settlement and Stronghold), the central tower deals 10 to 15 units of damage. Each built "structure"
adds 2...3 units to the possible damage dealt by the tower, bringing it (in a fully built city) to 46...69 units
(for example, in the Dungeon).
It should be noted that the actual damage often exceeds the upper limit, but never goes below the lower limit.
Different types of cities have a different number of "structures" and, therefore, different tower capabilities when they are fully ("structures")
built.

That's WOG! Many things are different there. I also played it for about 3 years. But here, the damage is really fixed.