restore the file from your antivirus quarantine or manually replace it in the game's installation directory
Are you using a like Steam or Ubisoft Connect, or did you install the game from a standalone source ?
Backup your registry first (File → Export).
If verification fails and the file is genuinely missing, you can obtain a clean copy from a trusted source.
Because this DLL is a part of the Ubisoft Connect (formerly Uplay) ecosystem, a corrupted client can cause the error.
Download DLLs only from reliable, clean sources. I recommend extracting from the game’s own backup or a friend’s install.
Now get back to the French Revolution, and may your co-op sessions lag no more.
To resolve this issue immediately: