Answer: It means something is blocking up. Most probably blocked by your antivirus. Make sure all precautions are taken properly. To fix this issue, read the following FAQs carefully. Click on this link to get to the FAQs page: -adjustment-program-faqs/
Epson l220 adjustment program is Compressed files that combine multiple files into a single file, making it easy to transport or store them on disk space. The archive also provides options for software encryption, file expansion, checksums, auto-extraction and self-installation.