Why are multiple quartus_sh.exe processes running even after I close the Quartus II software?

Description

Due to a problem with the Quartus® II software versions 9.1 and earlier, you may observe multiple quartus_sh.exe processes running even after the Quartus II software has been closed. The problem is related to the TalkBack feature in the Quartus II software which collects design meta-data and sends it to Altera®.

To work around this problem, you can disable the TalkBack feature by one of the following methods. Note that disabling the TalkBack feature may disable other Quartus II features:

• From the Windows command line:
1. Execute <Quartus installation path>\bin\tb2_install.exe
2. Disable the Enable sending TalkBack data to Altera option
3. Click OK to save your changes
• From the Quartus II GUI:
1. On the Tools menu, select Options
2. In the Options window, select the Internet Connectivity category
3. In the Internet Connectivity dialog window, click the TalkBack Options button
4. In the TalkBack Options window, disable the Turn on the Quartus II software TalkBack feature option
5. Click OK to save your changes

This problem is fixed beginning with the Quartus II software version 9.1 SP1.