What did you do before the bug happened? (Steps to reproduce your issue) I have an alias that enables core.symlinks from the command line: relevant lines from my system gitconfig: core.symlinks=false relevant lines from my user .gitconfig: difftool.bc4diredit.cmd="c:/Program Files/Beyond Compare 4/BCompare.exe" -lro -expandall -solo "$LOCAL" "$REMOTE" alias.diffdirsym=-c core.symlinks=true difftool --dir-diff --tool=bc4diredit --no-prompt execution (in a repo with a changed file) git diffdirsym execution environment elevated powershell 5.1 shell What did you expect to happen? (Expected behavior) for the command to work What happened instead? (Actual behavior) received a "Function not implemented" error: error: could not symlink '<redacted physical path to changed file>' to 'C:\Users\contc\AppData\Local\Temp/git-difftool.a49272/right/<redacted relative path to copy of changed file>': Function not implemented What's different between what you expected and what actually happened? Anything else you want to add: verified the alias works in 2.48.1.windows.1 Please review the rest of the bug report below. You can delete any lines you don't wish to share. [System Info] git version: git version 2.49.0.windows.1 cpu: x86_64 built from commit: cca1f38702730b35f52c29efd62864b85e85ddcc sizeof-long: 4 sizeof-size_t: 8 shell-path: D:/git-sdk-64-build-installers/usr/bin/sh feature: fsmonitor--daemon libcurl: 8.12.1 OpenSSL: OpenSSL 3.2.4 11 Feb 2025 zlib: 1.3.1 uname: Windows 10.0 19045 compiler info: gnuc: 14.2 libc info: no libc information available $SHELL (typically, interactive shell): <unset> [Enabled Hooks] Chris Conti Email: chris.conti@xxxxxxxx | pega.com