Use a copy with a tool:
Finding an official download for JETCOMP.exe is currently difficult as Microsoft has removed it from the official Microsoft Download Center. Microsoft Learn Is Jetcomp.exe retired for mdb? - Microsoft Q&A 3 Aug 2025 — jetcomp.exe download
How to obtain it safely (recommended approach) Use a copy with a tool: Finding an
It's worth noting that this utility is not signed with a modern code-signing certificate from Microsoft. While it is an official Microsoft tool, its executables are from the late 90s/early 2000s and are not signed in the way we expect today. For example, one copy found online carries a digital signature from "VeriSign, Inc." for "On Center Software, Inc.," which expired in June 2013. Always, always download it directly from an official Microsoft link. This is not a tool you should trust from third-party "download" websites. While it is an official Microsoft tool, its
If the data is critical and a backup is not available, your final option is to use a third-party Access database recovery tool. These tools are specifically designed to scan damaged database files and extract as much recoverable data as possible. While they are paid software, they are often the only solution for severely corrupted files.