Failed to open project unable to determine project type

[RayDanser]

I hope someone has run into this issue. I have a project that I've kept updated for years. Within this project are around 50 map layouts that I keep updated. Today, after closing the project due to some network loss issues we encountered as an agency, I received this message upon attempting to re-open: "Failed to open project unable to determine project type..". I have no idea how to recover my work. Help!

[RayDanser]

I failed to mention that I am currently using v3.3.0

[CodyPatterson]

Hey @RayDanser 

I would attempt these things here:

Restart the computer and try again

Move the project to your desktop and try to open it again

Take a backup before you do this, but right click and go to properties, and then check to see if there are any Previous Versions

If your company has a backup software, attempt to grab a copy from there if none else works.

I can try to think of some other things, but this has been the path I've taken when things like this happen.

Cody

[RayDanser]

Thanks Cody! Those are all great ideas. I've already rebooted. I'll try your other suggestions. 

[Robert_LeClair]

Another thing to try is in ArcGIS Pro Settings under the Application-General tab, click the radio button for "Show the start page" under the Start ArcGIS Pro item.  Once ArcGIS Pro starts, open the project file (*.aprx).  Does the project load?

[RayDanser]

Hi Robert. Thank you for the reply. 

That is how I attempted to open the project when I received the error. I'm currently contacting my IT department in order to revert my directory to a previous version. Thank you for the idea!