"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
Failed to grab execution mutex. System error 258.
This error can been seen due to one to the following reasons:
Open the Windows task manager and kill any remaining msiexec.exe processes running. Attempt the install again. If the error remains reboot the computer and run the Setup.exe file again.
A further reboot, after installation, may also be required.
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