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So you’re desktop or laptop is running on Windows 7, and you would like to install Google Chrome… but you can’t install it because of this error,

Google Update Error 0x8004071c?

Here’s the fix: (source)

1. Go to the Start menu > Run.
2. Run regedit. Click OK.
3. Find and right-click the relevant registry key for your operating system:

Windows XP: AuditInProgress in HKLM\System\Setup

Windows Vista: ImageState in HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\State

Windows 7: ImageState inHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\State

1. Select Modify.
2. Delete the value. Click OK.

Oops! This link appears broken. Page not found-connection failure.

Unchecking  ”Use DNS prefetching to improve page load performance” didn’t do the trick?  Try using Google Public DNS, it worked for me.