Error Code Portal
MicrosoftWindows Installer return codesError code

120

ERROR_CALL_NOT_IMPLEMENTED

Alternative forms: 0x00000078 · 0x78 · ERROR_CALL_NOT_IMPLEMENTED · 0x80070078

What does this code mean?

Code 120 · An issue reported by Windows Installer return codes.

Official explanation · Original text

This value is returned when a custom action attempts to call a function that can't be called from custom actions. The function returns the value ERROR_CALL_NOT_IMPLEMENTED.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

MsiExec.exe and InstMsi.exe error messages (for developers) ↗

Creator: Microsoft and MicrosoftDocs contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted numeric codes, symbolic names and English message text; converted Markdown/HTML to plain text and normalized whitespace; added Korean product context, namespace labels, status classification and separately labeled official links. No machine translation of message text.

Source details · Original licenses and notices