Windows Installer package could not be opened
1619 means the MSI package could not be opened; verify the file exists, is accessible and is a valid publisher-supplied Windows Installer package.
What it means in this context
Microsoft defines Error 1619 (ERROR_INSTALL_PACKAGE_OPEN_FAILED) as Windows Installer being unable to open the installation package and directs users to verify that it exists/is accessible or contact the vendor to verify it is a valid Windows Installer package.
What is known, and what is not proven yet
Keep observation, evidence and conclusion separate before making a higher-impact change.
MSI returned 1619 before installation could proceed.
Exact package path, accessibility and publisher/source integrity.
Opening/accessing the installation package.
Whether the package is present/readable and genuinely valid MSI content.
Use a fresh publisher-supplied local copy.
Publisher if its official package still cannot be opened.
- Confirm the MSI file still exists at the exact path used.
- Copy/download it again from the official publisher if integrity/download is uncertain.
- Use a normal local path you can read instead of a disconnected network/removable path.
- Verify that you are launching the intended MSI rather than a renamed/non-MSI file.
Verify package path and publisher source
Low riskWhy: 1619 is specifically an open/access/valid-package failure.
- Check the file path and permissions.
- Re-download from the official publisher if needed.
- Try from a local writable folder with a simple path.
- If the same official package remains unreadable, contact the publisher.
When not to use this record
Do not change Windows Installer service configuration or system permissions broadly when the package path/file itself is inaccessible or invalid.
If it persists
If Windows can open the package but reports 1620, use the invalid-package record. If a different MSI code appears after the package opens, follow that code instead.