For theses submitted, but not published:
If a submission has been delivered to ProQuest and is not yet published, ProQuest is able to "undeliver" the submission so that edits can be made. Please communicate with your academic department coordinator to start this process. ProQuest will change the status from "delivered" to "ready for delivery" at which point you will be able to upload a revised PDF copy before re-delivering. You can do that in the Revisions/Changes section, where you will be able to Replace the existing PDF with the revised PDF.
For theses submitted and published:
For a thesis to be already published in ProQuest it has already gone through the process of being certified by the thesis advisor, accepted by the academic chair. Any changes, including the extraction and/or correction of significant errors must be approved by the thesis advisor and department chair. ProQuest will require a letter or email containing the permission or approval, a complete corrected version of your thesis, and a fee. Please be reminded this will only be applicable to the original version published by ProQuest, not to the original version published in DASH. We recommend working with your academic department in order to address any changes to the copy of record.