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Which operating system are you using? This is quite important so that we can give the correct advice.
If you are confident that InstallHirezService.exe is a reputable file, then I would try rebooting in to safe mode, temporarily disable any anti-virus software and UAC. It looks like it's a problem relating to older installer packages. There are quite a few FAQs relating to this error for other applications and those are the suggested steps in most cases.
I would only do this if you 100% trust this application.