Deletion of the value HKEY_CURRENT_USER\Software\QuantumGIS\QGIS\UI\state can solve the issue. K. Goyo wrote: > 2012/5/10 William G. Guthe<wguthe at princeton.edu>: >> The Map Navigation toolbar has disappeared from my QGIS 1.7.4. .. > > Look for qgis related keys in the windows registry. > >..