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Bug: Basemap layer is not added to map when using the Add Basemap dialog

Description

When adding a basemap layer using the Add Basemap dialog from the Add Data menu, the basemap layer is not succesfully added to the map document.

Note:
This can also happen when adding content from Add Data > Add Data from ArcGIS Online.

Cause

This is a known issue introduced with the File Menu Performance patch for Service Pack 3 and occurs at Service Packs 4 and 5. The problem occurs when the length of the Windows username exceeds 10-13 characters.

Workaround

The layer is successfully downloaded from ArcGIS.com; however, it is not added to the map.

To add the layer to the map:

  1. Browse to My Documents > ArcGIS > Packages.
  2. Locate the folder with the same name as the basemap and a .lpk extension.
  3. Expand that folder and add the layer file to the map.

    Note:
    Content from ArcGIS Online also has respective folders and an associated layer file inside each folder that can be added to the map.

Related Information