Error Code Portal
MicrosoftWindows Installer messagesError code

1611

MSI message 1611: The setup was unable to automatically close all requested applications. Please ensure that the applications…

Alternative forms: 0x0000064B · 0x64B

What does this code mean?

Code 1611 · An issue reported by Windows Installer messages.

Official explanation · Original text

The setup was unable to automatically close all requested applications. Please ensure that the applications holding files in use are closed before continuing with the installation.

Troubleshooting and diagnostic links

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

Source and terms of use

Windows Installer 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