ArcGIS Network Analyst is an ArcGIS for Desktop extension that allows users to perform network-based spatial analysis. In some instances, users are unable to utilize Network Analyst tools because the toolbar appears to be shaded.
There are several possible reasons for this issue:
· The Network Analyst extension is unchecked in the Customize menu.
· A network dataset is not added into ArcMap.
· There are broken links in the map document (MXD).
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