Microsoft Windows PowerShell 1.0 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Microsoft Windows PowerShell 1.0 reached end of life on 14 Jan 2020. It no longer receives security fixes.
Support timeline
Official dates from the Microsoft Windows PowerShell release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 14 Nov 2006 | — |
| End of life | 14 Jan 2020 | 6.6 years ago |
| Latest release | — | final |
Where to go from 1.0
Recommended target: Microsoft Windows PowerShell 5.1.
The newest actively supported branch is Microsoft Windows PowerShell 5.1 (latest release ).
Frequently asked questions
Is Microsoft Windows PowerShell 1.0 still safe to use?
Microsoft Windows PowerShell 1.0 reached end of life on 14 Jan 2020, 2,399 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Microsoft Windows PowerShell 1.0?
Yes — the final release (1.0) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Microsoft Windows PowerShell 1.0 to?
Upgrade to Microsoft Windows PowerShell 5.1, the newest actively supported branch.