Exchange 2013 CU7 setup /preparead: [ERROR] Access to dsaccessperf.dll denied

Background: You are deploying Exchange 2013 using the CU7 media and are attempting to run setup /PrepareAD.

Issue: You receive the following error: “[ERROR] Access to the path ‘C:\Windows\Temp\ExchangeSetup\dsaccessperf.dll’ is denied.”
Note: This error may be contained in the Exchange Setup Logs

Solution:
1) delete the “ExchangeSetup” folder contained in C:\Windows\Temp
2) confirm the account you are using is a member of schema admins, enterprise admins and organization management.
3) check the checkbox of doom on the user account being used to run “setup /preparead”.

Conclusion: setup /preparead should now complete successfully

Additional thoughts: During my troubleshooting I tried giving Everyone-Full-Control on the ExchangeSetup folder and that did not resolve the issue.  I verified the dsaccessperf.dll had Everyone-Full-Control on it as well.

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