Hi @Metavit_ISID ,
Please refer below documentation link which states that starting with NX11 you must manually install I-deas ASC/DWG Importer files in addition to the NX installation.
Hi @Metavit_ISID !
When you say you "cannot reach the site", I am not sure if you mean you cannot reach the Documentation pages that were mentioned by @SamadhanGaikwad and @GaneshKadole or if you cannot get to the download pages on GTAC.
The location of these files was moved last month as part of the update of the NX Download site on GTAC
If you have link pointed o the I-deas Importer files under the old structure, you will need to navigate to them using the new structure.
You will now find the files you need to install under NX -> NX Support -> NX Release Independent -> Drafting -> I-deas_ASC_DWG_Importer.zip (see the image if not clear).
There is also a README file listed just below that tell you how to use the files.
For further reference on the Download site update see SFB-NX-8007639: