# Upgrading to 0.4.0.1

**URL:** <https://community.start9.com/t/upgrading-to-0-4-0-1/5543>\
**Category:** Services Support\
**Created:** [August 8, 2026, 3:51pm UTC](https://community.start9.com/t/upgrading-to-0-4-0-1/5543 "2026-08-08T15:51:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Cryptobob](https://community.start9.com/letter_avatar_proxy/v4/letter/c/7993a0/32.png) [@Cryptobob](https://community.start9.com/u/Cryptobob)\
**Post date:** [August 8, 2026, 3:51pm UTC](https://community.start9.com/t/upgrading-to-0-4-0-1/5543/1 "2026-08-08T15:51:26Z")

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After upgrading to 0.4.0.1, another system upgrade appeared and when I went to upgrade, I got the following error:

**Error** Cannot read properties of undefined (reading ‘version’)

The notification remains but whenever you select upgrade it throws the error.

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**Author:** ![StuPleb](https://community.start9.com/user_avatar/community.start9.com/stupleb/32/195_2.png) [@StuPleb](https://community.start9.com/u/StuPleb)\
**Post date:** [August 8, 2026, 5:43pm UTC](https://community.start9.com/t/upgrading-to-0-4-0-1/5543/2 "2026-08-08T17:43:08Z")

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There’s no newer OS after v0.4.0.1 (at least not quite yet), so we might need to establish what example you’re doing.

Do you have a login screen, or are you in Diagnostic mode??

If you have a login screen, **Hard refresh** : Ctrl+Shift+R (Windows/Linux), Cmd+Shift+R (Mac Firefox/Chrome), or Cmd+Option+E then Cmd+R (Safari). If it persists, fully quit and reopen the browser.

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**Author:** ![Cryptobob](https://community.start9.com/letter_avatar_proxy/v4/letter/c/7993a0/32.png) [@Cryptobob](https://community.start9.com/u/Cryptobob)\
**Post date:** [August 9, 2026, 9:01pm UTC](https://community.start9.com/t/upgrading-to-0-4-0-1/5543/3 "2026-08-09T21:01:21Z")

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Got it sorted out. Server just needed to restart and everything is showing as it should.