OPERATIONAL DEFECT DATABASE
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Dell EMC PowerPath for Windows installation fails with error message 0x800401f4 - Error in ::IDFromString: Invalid interface string. ### Bootstrapper.log 2019-10-30 15:05:31 --- Loaded 3 supported component(s) 2019-10-30 15:05:33 Error: 0x800401f4 - Error in ::IIDFromString: Invalid interface string 2019-10-30 15:05:33 EMC PowerPath installer finished, return code=-1
The issue is seen when there are invalid registry keys exist under HKEY_CLASSES_ROOT\Installer\Products. In this example, there were keys which starting with _(underscore characters) instead of numbers.
To resolve this issue: Run Regedit as Administrator account Request the customer to export the keys starting with the underscore ___ in HKEY_CLASSES_ROOT\Installer\Products\ from the affected server. Delete those keys. Run the PowerPath installation again
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