# I suddenly became unusable due to internal error

**URL:** <https://help.nextcloud.com/t/i-suddenly-became-unusable-due-to-internal-error/29157>\
**Category:** ℹ️ Support\
**Tags:** nc13, bruteforcesettings-app\
**Created:** [March 19, 2018, 1:20am UTC](https://help.nextcloud.com/t/i-suddenly-became-unusable-due-to-internal-error/29157 "2018-03-19T01:20:20Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![STrike](https://help.nextcloud.com/user_avatar/help.nextcloud.com/strike/32/15509_2.png) [@STrike](https://help.nextcloud.com/u/STrike)\
**Post date:** [March 19, 2018, 1:45am UTC](https://help.nextcloud.com/t/i-suddenly-became-unusable-due-to-internal-error/29157/4 "2018-03-19T01:45:47Z")

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> [@zoo3](#):
>
> However, the sign-in time was very slow.

Can be caused by bruteforce. Please check this:

> [@How can i unblock an IP (blocked through brute force detection)?](https://help.nextcloud.com/t/how-can-i-unblock-an-ip-blocked-through-brute-force-detection/5731):
>
> Somehow, i managed to be blocked on my nextcloud instance (nc 11 beta). Seems like i’ve made too much failing login attempts through thunderbird. No my connection is throttled. How can i unban my IP? Is there a time-limit on the ban?

> [@zoo3](#):
>
> When using Nextcloud, what is the reference value of wait\_timeout?

Depends on your system 😉

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