Does V-Ray for Maya obey the "LongPathsEnabled" Windows registry setting?

[vanpixelguy]

Question: does V-Ray for Maya as well as the V-Ray standalone renderer obey the Windows "LongPathsEnabled" registry entry?

We hit an error where the Windows 10 operating system reports the file path name as being too long. Apparently there is a limit of something like 290 characters. We found on a Microsoft page that we can enable the registry entry "LongPathsEnabled" by setting the value to "1", however, the setting will only be obeyed if the corresponding application (in this case V-Ray for Maya) obeys that registry entry.

Details:
. V-Ray version: 6.00.03
. Maya version: 2023.2
. Operating system: Windows 10
. Link to Microsoft page describing the fix: https://learn.microsoft.com/en-us/wi...abs=powershell

[hermit.crab]

This has come up before. Back then, the bottleneck was the host platform (Maya). Based on this Autodesk article, there seems to be progress on the matter. What I've tested:

1. Rendering with V-Ray within Maya 2025 works with long paths.
2. Rendering with V-Ray and Maya 2025 Batch also works.
3. Rendering with V-Ray Standalone doesn't
(4.) Rendering with V-Ray and 3dsmaxcmd.exe 2025 works.
(5.) Rendering with V-Ray within 3ds Max 2025 doesn't (3ds Max still does not allow it)

A note: based on what I've read Windows Explorer also doesn't support it (you can't create folders above the limit). The registry entry is meant for command-line use. You can create folders beyond the 259-character limit through there.

We actually have an improvement request logged (internal bug-tracker id: VMAYA-8826) to support it in V-Ray Standalone. I'll give it a bump.

[vanpixelguy]

Thank you so much for testing all of these cases.

• BTW what version of V-Ray did you use for testing, the latest nightly build?
• And which version of Windows?

Glad to see that Maya has support for obeying the long path registry entry, And thank you for bumping the ticket for V-Ray Standalone.
Take care.

[hermit.crab]

V-Ray 7 official and Windows 11.