I Failed even if i use the following code:

use Win32::Registry;
my $Register = 'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{0
+34106B5-54B7-467F-B477-5B7DBB492624}';
my $hkey;
$HKEY_LOCAL_MACHINE->Open($Register,$hkey)|| die print "($!) ($?) ($^E
+)\n";

$hkey->Close();
[download]

If i remove the last entrance key {034106B5-54B7-467F-B477-5B7DBB492624} and run it like the following is working good:

use Win32::Registry;
my $Register = 'SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall';
my $hkey;
$HKEY_LOCAL_MACHINE->Open($Register,$hkey)|| die print "($!) ($?) ($^E
+)\n";

$hkey->Close();
[download]

My question is why? Why {034106B5-54B7-467F-B477-5B7DBB492624} caused to read problem?

I just need to check if some product is installed

Did you ever figure this out? I'm able to reproduce this as well.

Answer found on stack overflow. Wow64 is the issue - use the system native version of reg.exe %Windir%/sysnative/reg.exe