# MySQL error upgrading to 4.2

**URL:** <https://forum.mautic.org/t/mysql-error-upgrading-to-4-2/22867>\
**Category:** Mautic 4 Install/Upgrade Support\
**Created:** [March 1, 2022, 5:29pm UTC](https://forum.mautic.org/t/mysql-error-upgrading-to-4-2/22867 "2022-03-01T17:29:15Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![silavapi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/silavapi/32/7424_2.png) [@silavapi](https://forum.mautic.org/u/silavapi)\
**Post date:** [March 1, 2022, 6:17pm UTC](https://forum.mautic.org/t/mysql-error-upgrading-to-4-2/22867/4 "2022-03-01T18:17:44Z")

</div>

Hi there,

What version are you updating from here?

You may have outstanding migrations if you have had incomplete updates in the past.

Does it do anything if you check in the UI for the schema updates?

> **[Mautic update failed - how to recover](https://docs.mautic.org/en/troubleshooting/update-failed#checking-for-schema-updates)**
>
> . Sometimes when updating Mautic, the process might stall or fail part way through. This can cause a problem, because it can cause Mautic to be inbetween two versions and often this can make the system unusable.. . . . . . Generally speaking, updates...

---

_[View the full topic](https://forum.mautic.org/t/mysql-error-upgrading-to-4-2/22867)._