Revit opens projects in sperate windows

[amirhossein.jafarii]

All,

It has been few days that when I want to open another project in Revit it will open in "separate windows" meaning that I can't copy-paste items..or even import families in projects...

I appreciate your help.

Thank you,

Amir

[ToanDN]

Open them using File menu within Revit.

[barthbradley]

Same Revit Version?  

[RDAOU]

@amirhossein.jafarii 

You need to re-associate the file extension .rvt with the right Revit.exe. Usually Done via the registry; however, if you are not familiar with that, you can try if the following works

(Even if they are already associated with Revit, re-associate them)

1. From windows file explorer, select and right clock a .rvt file
2. Select Open With 
   • Make sure to check Always use this APp to open .rvt
   • Select More Apps
   • Scroll down to "look for another apps on this PC"
   • Navigate to C:\Program Files\Autodesk\Revit 2022    (or Replace 2022 with the latest version you are using)
   • Select the Revit.exe found in that folder

                   

If the above doesn't work, you will need to

1. re-associate the Shell/Open/Command with the right application -
   • Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Revit.Project\shell\open\command
2. and set the DDEexec to [open("%1")]
   • Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Revit.Project\shell\open\ddeexec

If you are not familiar with editing the registry, it would be best if you ask an IT specialist to assist you with that

[benB6WS9]

Thank you! The "More apps" part is the thing that fixed it for me.

[RSomppi]

You should always open projects from within Revit. This is especially important when you have more than one version installed.

[ryley.g.h]

You cannot copy/paste or transfer project standards from two different instances of Revit. You need to open BOTH files within ONE Revit window, then you can do the copy/paste or transfer project standards.

[angels2504]

This helped me too much thank you!