Why does %TEMP% resolve to a non-deterministic path of the form %TEMP\<digit>?

user_792371 0
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I have a Windows Server 2008 32 bit and when I'm typing %temp% it takes me to ..AppData\Local\Temp\1\ or ..AppData\Local\Temp\2 instead of ..AppData\Local\Temp

I've already checked the Environment Variables and they are ok.

I'm asking that because I have an application that's supposed to copy files to %temp%\my application and instead it copies the files to %temp%\1\my application

Does someone have a solution for that?

temp windows-server-2008 windows
2 Answers

Environment variables have 4 contexts:

(do Win+R then type regedit to find the paths below)

  1. System variables (HKLM\System\CurrentControlSet\Control\Session Manager\Environment)
  2. User variables (HKCU\Environment)
  3. Process variables (not stored in the registry)
  4. Volatile variables (HKCU\VolatileEnvironment)

ref: https://rakhesh.com/windows/temp-environment-variable-has-a-2-or-other-number-after-it/

When the Group Policy Do not use temporary folders per session isn't configured or isn't set to Enabled, the system will generate two Volatile Environment variables TEMP & TMP with the same value of the current user's TEMP variable with the addition of an incremental number at the end of the TEMP folder (increments each time the user logs in, check @Damien's answer for details)

If you set the group policy Do not use temporary folders per session to enabled, this behavior will not occur.

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