Delete command greyed out in revit 2020

[Anonymous]

Hi,

The Delete command is greyed out in revit 2020 also it is not working in keyboard suddenly.

Can any one give the solution for this.

Attached Screen cast for reference.

Thanks if solved.

Regards,

Pandiraj.AV

[Anonymous]

I don't think it has anything to do with Revit 2020.  It looks like you are in a family environment - where some things can't be demolished, such as the level, or preset references.

[ennujozlagam]

Try to close your file, before opening the file check the audit. try to uncheck use hardware acceleration from options and install latest updates from auto desk and see if all of these suggestion helps. thanks

[ToanDN]

Some built-in reference planes, reference lines, and parameter in families cannot be deleted.