Frequently Asked Questions
Note: if you can't find the answer you are looking for, you can also search the WinZip® web site for words related to a problem (for example, you can search for "disk spanning" or "uuencode").
Top Questions: (Additional questions organized by topic are below)
- Why is my registration code not working in WinZip 12?
- Why is my registration code not working in WinZip Self-Extractor 4.0?
- How do I upgrade to the latest version?
- How do I upgrade to WinZip Pro from WinZip Standard?
- I have lost my registration number. How do I get it?
- What is a Zipx file?
- How do I get WinZip for free?
- How do I enter my WinZip product registration code?
- How do I change my address?
Using WinZip:
- How do I customize my WinZip MSI?
- What is a data backup and how do I restore my data backup?
- Why is WinZip slow when extracting some files?
- How do I resize my photos for emailing?
- How do I use disk spanning?
- How do I compress a folder and later restore it?
- How does the WinZip Camera Wizard work?
- How do I use WinZip to process AOL e-mail attachments?
- How do I compress and e-mail files using WinZip and my e-mail program?
- How can I protect myself from viruses distributed in Zip files?
- Can I use WinZip's e-mail features with AOL?
- Are WinZip 9.0 and WinZip 9.0 SR-1 still supported?
Downloading and Registration:
- What is the easiest way to order WinZip?
- I have lost my registration number. How do I get it?
- How can I change my contact information?
- How do I upgrade to the latest version?
- I had a problem downloading WinZip. What should I do?
- How can I sign up to receive e-mail notification of upgrades and other announcements?
Additional Questions About Using WinZip:
- How do I install WinZip site licenses in a networked environment?
- Why can't I open Zip file attachments in Outlook Express 6.0 SP1?
- How do I control the folder information that WinZip stores in a Zip file?
- How do I use UUencode/BinHex/MIME support? (tutorial)
- Why don't some files (like GIFs and JPGs) compress very much?
- How do I contact WinZip technical support about a problem?
- Where can I find external programs like ARC, ARJ, LHA, etc.?
Questions on WinZip E-Mail Companion:
- What is AES Encryption?
- What does WinZip E-Mail Companion do?
- What are the requirements for WinZip E-Mail Companion?
- How do I register WinZip E-Mail Companion?
- Why don’t my configuration changes to WinZip E-Mail Companion seem to get saved?
- My e-mail provider (or my e-mail recipient) does not allow Zip files as attachments. What can I do?
- Why am I being asked if I want to zip a Zip file?
- What is the difference between “legacy” and “best method” compression?
- If I send a zipped attachment with WinZip E-Mail Companion will the person receiving the message need WinZip E-Mail Companion or WinZip?
Questions On WinZip Self-Extractor:
- What is a Self-Extracting Zip file?
- What are the requirements for WinZip Self-Extractor 4.0?
- Why is my registration code not working in WinZip Self-Extractor 4.0?
- How do Standard Self-Extractors and Self-Extractors for Software Installation differ?
- Can I customize the WinZip Self-Extractor dialog box?
- What are the differences between the full WinZip Self-Extractor and the Personal Edition version?
- Why am I suddenly getting "header corrupt" messages when I run self-extractors?
- I have lost my registration number. How do I get it?