It sounds like you’re referring to a Diablo 2: Resurrected modification that enables offline play for the “Legacy Fashion Souls” (LFS) mod or similar custom content, specifically for a “v exclusive” version (likely meaning a certain patch version, such as 1.6.x or 2.7, where online checks are strict).
Validation Steps
Full example:
"C:\Program Files (x86)\Diablo II Resurrected\D2R.exe" -mod LFS -txt -offline -v exclusive diablo 2 resurrected lfs mod offline fix for v exclusive
Additional Resources
Whether you're playing on a modded console or looking for a "Layered File System" (LFS) style fix for emulation, here is the current state of the offline fix community. The "19 Nines" Save File Hack It sounds like you’re referring to a Diablo