error

Hello, I can not play median because after turning on the game, I get this error right away. https://i.imgur.com/g3XmELG.jpg

Set Diablo II.exe to run as an Administrator and in compatibility mode with Windows XP (Service Pack 3) and the Launcher as an Administrator. Try also restarting your PC.
Make sure you are running the game in English. If you are interested in playing the game in your language take a look here: Sigma Translations.
Make sure you are running the game in windowed mode, you can set it in the Launcher's settings page, later on you can try to see if full-screen works well with your system.
Make sure that your antivirus/security-suit is not preventing the mod from working correctly, consider whitelisting it.

Still getting the error? To remedy this situation it will be needed to add Diablo2 related .exe(s) in the DEP exeptions list, here four methods on how to (is recommended to use them in order from 1 to 3 and only if the previous method has failed. For example, if the 1st method didn't work try the 2nd one):

1st Method - Using Windows GUI (easier method, but results are not guaranteed 100%):

'right click' on Computer → Properties → Advanced system settings → 'Advanced tab', in Performance section click on Settings... → 'Data Execution Prevention tab' check "Turn on DEP for all programs and services except those I select:" → click on Add → find Diablo II.exe and Game.exe in Diablo2 directory (a.k.a. the installation folder) and add them → Apply → Ok → Restart the PC.

2nd Method - Tool assisted method (just a bit more steps/reading + a small download):

[step a] - Download (from here) d2mxl_dep_reset.bat (right click, 'save as') and run as Administrator to delete any corrupted registry entries. (courtesy of ryunp)
[step b] -'right click' on Computer → Properties → Advanced system settings → 'Advanced tab', in Performance section click on Settings... → 'Data Execution Prevention tab' check "Turn on DEP for all programs and services except those I select:" → click on Add → find Diablo II.exe and Game.exe in Diablo2 directory (a.k.a. the installation folder) and add them → Apply → Ok → Restart the PC.

3rd Method - Turning on DEP only for essential Windows programs and services:

make sure you are on the latest Median Launcher version and do the following:
'right click' on Computer → Properties → Advanced system settings → 'Advanced tab', in Performance section click on Settings... → 'Data Execution Prevention tab' check "Choose Turn on DEP for essential Windows programs and services only" → Apply → Ok → Restart the PC

Problem solved, thank you for help. The problem was the language change.