AutoCAD 2010 cannot attach multiple xrefs at a time

It’s sad to see that this functionality had to be changed in AutoCAD 2010 as this was a wish that came true in AutoCAD 2004.

Issue

In previous versions of AutoCAD you were able to select and insert more than one drawing as XREF at a time with the XATTACH command. However, in AutoCAD 2010 you are only allowed to insert one drawing at a time.

Solution

This change was required in order to support other file formats than the DWG format.

If you want to insert more than one drawing as an XREF at a time, use the CLASSICXREF command.

Knowledge Base document: Inserting multiple XREFs in AutoCAD 2010