Revit file won't open-upgrade from 2009 to 2017

[Anonymous]

I saved my Revit file in the 2017 version. When I went to open it again, it said it had to upgrade my file from the 2009 version to the 2017 version. It was never saved as the 2009 version and now it won't open period.

[DarrenP]

some things to try: https://knowledge.autodesk.com/support/revit-products/troubleshooting/caas/sfdcarticles/sfdcarticles...

[barthbradley]

Do you by any chance have multiple sessions of different Revit versions running simultaneously?

[s.borello]

Did you make a copy before you upgraded?  Can you try it again?

[ToanDN]

It could have happened when you opened a file saved by a newer build with an older build (same year). So, try
to update Revit 2017 to the latest build.

[Anonymous]

No, it was never a 2009 version. It was created and has only ever been worked on in the 2017 version.

[Anonymous]

It was never a 2009 version. It was created and has only been edited in the 2017 version

[SteveKStafford]

Start a support request with Autodesk to see if they can recover the file. Do you have Revit 2018 or 19? If so try opening it in either of those. The message doesn't indicate that but the message may not be able to determine what the actual version is properly.

I suspect your file has been corrupted and if Autodesk can't recover it you're stuck in a very hard place, sorry.