Collaboration for Revit: Operation Could Not Be Completed

When you try to sync your Collaboration for Revit Model you get a message:

Operation Could not Be completed

This operation could not be completed. Please try again.

If you are collaborating on a model using the cloud or Revit Server, check your network connection.

If the problem persists, save any changes to the models locally. 

Solution:

1. Save your work locally. This can be done by clicking on the save icon in the upper left corner of your software.
2. Reboot your machine.
3. Start your machine.
4. Launch Revit.
5. Verify you are signed into A360 in the upper right corner of the software.
6. Verify that you can go to the Open dialog box and click on the BIM 360 icon and see your Collaboration for Revit models. See my blog on issues with not seeing projects in the BIM 360 folder: http://blogs.rand.com/support/2016/08/collaboration-for-revit-you-are-not-a-member-of-any-a360-projects.html
7. If you can then cancel the Open dialog box and go back to the Recent Files page.
8. Click on your model that you saved which will show in your Recent Files page.
9. sync the model.

 Verify you have the current version of Collaboration for Revit:

• 2015
• 2016 
• 2017 is inside of update 2017.1

Verify you have the current update for your Revit software:

• All updates for Revit software

Verify all users working on the model have the same build.

• Revit updates - Builds Matter