As of late 2025 and early 2026, the official direct download link for JETCOMP.exe from the Microsoft Download Center has been retired. However, users seeking this utility can still find it through several channels: Is Jetcomp.exe retired for mdb? - Microsoft Q&A
Standard Access repair tools try to open and close the file to initiate a repair; if the corruption is severe enough to prevent the file from opening, those tools fail. JetComp bypasses this check, allowing it to reach and fix data even in heavily damaged .mdb files. Where to Download JetComp.exe jetcomp.exe download
: If the tool won't start, you may need updated system files like msjet40.dll . These are often included in Jet 4.0 Service Packs . As of late 2025 and early 2026, the
) is a standalone tool designed by Microsoft to compact databases created with the Microsoft Jet database engine 3.x and 4.x. JetComp bypasses this check, allowing it to reach
No. Your antivirus likely saved you. Unless you copied the file directly from a Microsoft installation disc, assume it is malicious.