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chore(windows): add comment

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This commit is contained in:
Marc Durdin 2022-02-09 15:00:57 +11:00
parent 08a204ee12
commit c24d698f8e
1 changed files with 19 additions and 0 deletions
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19
windows/src/desktop/setup/RunTools.pas
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@ -934,6 +934,25 @@ begin
end;
end;
//
// See #6221.
//
// If Keyman is being installed under the SYSTEM profile, e.g. when using tools
// such as SCCM or Intune, then the installer runs with a redirected folder for
// %LocalAppData%, under C:\Windows\SysWow64\config, but is given the name
// C:\Windows\System32\config....
//
// Keyman Setup then creates %LocalAppData%\Keyman\Diag, which it thinks is in
// C:\Windows\System32\config... But in reality it is in SysWow64... Keyman
// Setup passes a file under this folder to Windows Installer, running as 64
// bit, which immediately falls over because the path does not exist to it, in
// the real System32\config folder.
//
// This patch disables redirection temporarily just to create the folder under
// both 32 and 64 bit versions of the profile. It has no effect on normal user
// accounts (apart from verifying that the folder is present twice rather than
// once).
//
procedure TRunTools.ApplyWow64SystemProfilePatch;
type
TWow64DisableWow64FsRedirection = function(out cookie: PVOID): BOOL; stdcall;