Can't create a new temp file/folder after upgrading to Win 10

Abstract

TortoiseGit 1.8.14.0 & 1.8.15.0 (C:\Program Files\TortoiseGit\bin)

git version 1.9.5.msysgit.1 (C:\Program Files (x86)\Git\bin)

After upgrading from Win 7 to Win 10

• the Commit dialog is not shown after clicking context menu item Git Commit -> "master". (The others are all good.)
• Can't do the diff from log dialog
• ...

Cause: the security permissions of TortoiseGit temp folder might be different.

The key testing

• Command line is OK. "C:\Program Files\TortoiseGit\bin\tortoisegitproc.exe" /command:commit

• Debug Strings shows a CFileException was thrown from inside of CTGitPathList::LoadFromFile() (see here)

• Set advanced setting Debug = true, and result:

Looks like TortoiseGit creates temp file failed, see code. Or failure of ::GetTempPath(), see code.

Solution

Delete C:\Users\<user>\AppData\Local\Temp\TortoiseGit folder.

Original Report

When I try to commit a branch from the context menu, no dialog pops up and nothing happens. Git Sync, Show log, Git Rebase.. etc all works.

Noticed this after upgrading from Windows 7 to 10. Committing via command line and other Git tools works.

Not sure if there logs that can give more information about this.

Version info:

TortoiseGit 1.8.14.0 (C:\Program Files\TortoiseGit\bin)

git version 1.9.5.msysgit.1 (C:\Program Files (x86)\Git\bin)