09:24:28 Checking DB permissions for DB administrator user...
09:24:28 Exception occurred:
09:24:28 Verify run failed. Please check D:\temp\TD4QC_00075\Quality Center Upgrade Assessment Tool 1.1\log\DbVerify.log for the problem root cause .
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From looking at the Log file seems that you may not have access to the DB or using the wrong DB user account. make sure the user account is the one that was used to do the install of QC & is the owner of the Schema.