When trying to copy (CTRL-C) objects to the clipboard in AutoCAD, the following error message is displayed:
Copy to clipboard failed.
User-added image
Causes:
The selection set may contain proxy objects that the copy process cannot manage.
Solution:
Try the following workarounds:
Install the object enabler required to use the specialized objects. When you open the file, AutoCAD will show a proxy warning message that contains information about the proxy objects and missing applications that are needed. If the message is not displayed, change the value of the PROXYNOTICE system variable to 1.
To resolve this issue without acquiring an object enabler, explode all proxy elements via command _EXPLODE to their basic components.
If you are certain that your drawing (and blocks within your drawing) does not contain proxy objects, there may be data corruption present in the file and it needs to be repaired (see How to repair corrupt AutoCAD files). One troubleshooting process to try is to open a new file and use the INSERT command to import the damaged drawing (exploding the resulting block so you may work with it) and then use the LAYOUT > Template command to import the layouts.
See Also:
Avecto Defendpoint conflicts with copying and saving in AutoCAD
Error: "Unable to see objects in drawing"
Article ID: kA230000000tpnr