I resolved my issue by doing the following:
first, I used the Uninstall Tool to just remove Revit 2015, I left all the other installed utilities on my system.
second, I opened the license file folder (C:\ProgramData\FLEXnet\) and deleted everything there ( NOTE: the files are hidden by windows explorer by default so you need to enable "show hidden files" in the folder options for windows )
third, run the installer for Revit 2015 again. After installation I was prompted to enter my serial number, and prod. ID. After this installation finished. I closed the installation window and ran Revit 2015 and no longer receiving the Viewer Mode warning Dialog. I was able to open the Product License Information dialog from the main "R" menu and could see that my student license was activated now.
Hope this helps the next student struggling with this.
I also learned 3 things:
a) you need to activate your license and get an activation code from the student licensing portal (it will be emailed to you). They will ask your name, email, mailing address, phone number, institution, type of license (standalone), serial number and product ID. After this you will receive an email with activation code. This needs to be entered during activation.
b) On subsequent installations on new PC or reinstallations, you will not have to get the activation code again, as it is linked to your first activation under your student account login and the Revit 2015 Serial # and Prod. ID.
c) if you are reinstalling on a new compute, I RECOMMEND to export the license from the old computer before doing the new installation, then after intallation on the new PC, REVIT activation wizard will ask for the product serial number and prod. key and thje wizard will activate over the network automatically. Good Luck. This COMMUNITY does not provide good explanations of the licensing process.
UNFORTUNATELY There is little expert guidance and so you will definitely lose some hours trying to figure this out on your own. The threads posted on the subject have no resolutions or confirmation of solution,. If you post your question, you will wait for days possibly to get a reply. Also the community forum administrators will remove your posts to make it appear as if there are no problems with Revit Activation. They will just leave an original question and a simple but ineffective reply by some Autodesk Community Expert, to create an appearance of a well supported product, which is not true. The support is moderate at best. There is not telephone support. So keep fighting the fight students, keep posting to these threads, follow up and post what worked for you... so others can benefit. Autodesk is not making this easy on us. Keep posting your comments here. It is likely that this post will not be seen here for long. so GOOD LUCK!
here is a list of links that i found helpful in my struggles to resolve this problem:
- student license activation page
- Re-Activating Student License
- The Difference between Initial Activation and Re-Activation of product License
- Online Activation Registration
- Requesting Activation Codes
- http://www.autodesk.com/education/support