Why does my Quartus II installation appear stuck at 99% progress? - Why does my Quartus II installation appear stuck at 99% progress? Description Due to a problem with the installation program for the Altera software, if you install the Quartus® II software into the same directory as a previous Quartus II installation, the installer program may appear to hang while showing progress at 99%. To work around this problem, install the Quartus II software into an empty directory. This problem is fixed beginning with the Quartus II software version 11.0. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']