Well, more than likely if you have not touched PaperCut since v14 your customer might have some servers or workstations using <a href="https://staging.selectec.com/papercut-ends-client-support-for-32-bit-operating-systems/">32bit operating systems</a>. PaperCut made the jump to OpenJDK v11 in 2019, and that won't run on 32bit systems. So before you upgrade check what they have... they might have a 2008 server or some Windows 7 clients they wish to use with PaperCut MF. If that's the case, <a href="https://staging.selectec.com/contact/">get in touch</a> with our friendly support team who can assist you in working around this issue.