I searched this site for a solution, but while I found bits and pieces that led me to the answer, I never found a single, clear-cut explanation about how to fix the problem. So, for better or worse, here's my stab at explaining how to stop CCleaner from deleting your WinZip preferences.
- In CCleaner on the left side, click on the "Options" button, the click on "Exclude"
- On the right side of the Exclude window, click on "Add Registry"
- In the "Registry" form, click on the dropdown and select "HKCU"
- In the text box to the right of the drop down, type or paste the following (without the quotation marks):
"\Software\Nico Mak Computing\"
N.C. Gordon











