# Error updating system (Unknown trust)

**URL:** <https://forum.endeavouros.com/t/error-updating-system-unknown-trust/41182>\
**Category:** EndeavourOS repo\
**Created:** [May 24, 2023, 6:34pm UTC](https://forum.endeavouros.com/t/error-updating-system-unknown-trust/41182 "2023-05-24T18:34:55Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![marteng69](https://forum.endeavouros.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@marteng69](https://forum.endeavouros.com/u/marteng69)\
**Post date:** [May 26, 2023, 9:07am UTC](https://forum.endeavouros.com/t/error-updating-system-unknown-trust/41182/5 "2023-05-26T09:07:16Z")

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> [@Endear](#):
>
> error: failed to synchronize all databases (failed to lock a database).

Googling would have brought following link for you:  
[https://wiki.archlinux.org/title/Pacman#.22Failed\_to\_init\_transaction\_.28unable\_to\_lock\_database.29.22\_error](https://wiki.archlinux.org/title/Pacman#.22Failed_to_init_transaction_.28unable_to_lock_database.29.22_error)

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