When attempting to render to a UNC path the Render Queue removes the first \ (backslash) of the path, resulting in an error message.
We mainly work on server that we access using UNC paths. Opening and working with the project works fine. Saving works fine. But when attempting to render we run into problems. We can navigate to the correct folder, and set a file name. But when pressing render we get the attached error message.
Opening the output module reveals that the path now lacks the first \ (backslash) in the \\ UNC path.
See screenshot.
After Effects 25.0.0 (Build 53)
Windows 11