# Mautic 6.0.2 to 6.0.3 Update Can’t DROP INDEX \`mtc\_company\_match\` Error

**URL:** <https://forum.mautic.org/t/mautic-6-0-2-to-6-0-3-update-can-t-drop-index-mtc-company-match-error/36084>\
**Category:** Mautic 6 Install/Upgrade Support\
**Created:** [July 15, 2025, 3:46pm UTC](https://forum.mautic.org/t/mautic-6-0-2-to-6-0-3-update-can-t-drop-index-mtc-company-match-error/36084 "2025-07-15T15:46:13Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![andrew\_c3](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/andrew_c3/32/13547_2.png) [@andrew\_c3](https://forum.mautic.org/u/andrew_c3)\
**Post date:** [March 11, 2026, 7:30am UTC](https://forum.mautic.org/t/mautic-6-0-2-to-6-0-3-update-can-t-drop-index-mtc-company-match-error/36084/12 "2026-03-11T07:30:19Z")

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Hello **[mcpatcher](https://forum.mautic.org/u/mcpatcher),**

I haven’t tried your solution on M6.x because I didn’t see a need to upgrade minor versions given all the added complexity.

Yesterday, I attempted an upgrade from M6 to the latest M7 release and, to my surprise, encountered the same exact upgrade error. To make matters worse, the upgrade process to M7 actually broke the M6 installation, leaving it unusable. I rolled the system back to M6 and everything is working again.

> [@Mautic Upgrade Issue: M6.0.3 → M7.0.1 Fails with SQL Error and 500 Internal Server Errors](https://forum.mautic.org/t/mautic-upgrade-issue-m6-0-3-m7-0-1-fails-with-sql-error-and-500-internal-server-errors/37469):
>
> Hello, I recently attempted to upgrade my Mautic test instance from 6.0.3 to 7.0.1, but unfortunately the upgrade failed and left the system in a partially broken state. I’m posting here to see if anyone has encountered the same issue or has advice on how to resolve it. Environment Mautic version before upgrade: 6.0.3 Attempted upgrade to: 7.0.1 PHP version: 8.3.17 Database: MariaDB 11.4 The upgrade process fails with the following database error: An exception occurred while exe…

It’s frustrating to see that after all the effort put into adding new functionality to M7, this issue appears not to have been caught in testing. I can install the update to M7, which stops the system from working, roll back to M6, and then repeat the upgrade—yet it fails for the exact same reason every time.

This is only a test instance with sample data, but the upgrade process should still work reliably.

I don’t understand why this critical problem seems to be ignored by the developers while attention appears to be focused on fundraising efforts instead. Please fix Mautic upgrades !

Will you fix for M6 upgrades work on M7 ?

Thanks

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