JetComp.exe is a Microsoft utility used to compact, repair, or convert Microsoft Jet database files (.mdb). It is part of older Jet database tools and is often required when working with legacy Access 97/2000 databases.

Important: This tool is not needed for modern Access (.accdb) or recent Windows versions, which have built-in compact/repair features.

A: No. jetcomp.exe is for the Jet engine (.mdb files). It does not work with the newer ACE engine (.accdb). For .accdb files, you must use Microsoft Access or the CompactRepair utility from the Office suite.

If you have original CDs or ISOs for Office 2000 Developer or Office XP Developer, jetcomp.exe is included in the tools folder.

Search engines are filled with third-party websites claiming to offer the "official JetComp.exe download." These sites include names like jetcomp.en.download.ai, exedownload.app, or generic "DLL repositories."

Open Command Prompt as Administrator (if compacting system databases).

$Access = New-Object -ComObject "DAO.DBEngine.120"
$Access.CompactDatabase("C:\Old.mdb", "C:\New.mdb")