# Mantis: "APPLICATION ERROR #2800 Invalid form security token."

**URL:** <https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320>\
**Category:** Forum and website feedback\
**Created:** [March 14, 2018, 8:54pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320 "2018-03-14T20:54:02Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![ihnorton](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ihnorton/32/9_2.png) [@ihnorton](https://discourse.slicer.org/u/ihnorton)\
**Post date:** [March 14, 2018, 8:54pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/1 "2018-03-14T20:54:02Z")

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I’ve seen this error twice, yesterday and today, when I started filling in a form on Mantis (either a new issue or a response), and waited too long to submit. It happened again just now, after maybe 30 min. Reloading the page allows me to re-enter/copy the content and proceed, but this limitation seems quite unfriendly to bug reporters, who are (ideally!) collecting and confirming information over a period of time while filling in, before actually submitting.

> APPLICATION ERROR #2800 Invalid form security token.

Google takes me [here](http://www.mantisbt.org/docs/master/en-US/Admin_Guide/html/admin.troubleshooting.html) which says:

> Unfortunately, this problem cannot be fixed without a major rework of the way sessions and form security are handled in MantisBT.

Hmm.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [March 14, 2018, 9:06pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/2 "2018-03-14T21:06:47Z")

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I get this fairly often too, but fortunately if I just hit ‘back’ in the browser my note contents are still there and I can just click submit and everything is fine.

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [March 14, 2018, 9:19pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/3 "2018-03-14T21:19:26Z")

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You are lucky. I get this error often, too, but for me the content is usually (maybe always) lost. If cannot be fixed then at least showing a warning could help (“submission has to be completed within X minutes, otherwise entered in text may be lost”).

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [March 15, 2018, 12:44am UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/4 "2018-03-15T00:44:37Z")

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> [@lassoan](#):
>
> If cannot be fixed then at least showing a warning could help

👍

> [@lassoan](#):
>
> I get this error often, too, but for me the content is usually (maybe always) lost.

Idem.

Before submitting form, I always copy the content in a buffer. I usually do this for any online form …

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**Author:** ![cory.quammen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cory.quammen/32/1557_2.png) [@cory.quammen](https://discourse.slicer.org/u/cory.quammen)\
**Post date:** [May 15, 2018, 1:33pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/5 "2018-05-15T13:33:48Z")

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I am getting the same error while trying to sign up to report a bug. It doesn’t seem to help to click “Back” and try again after trying it numerous times. Is there a way an account can be created for me?

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [May 15, 2018, 1:53pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/6 "2018-05-15T13:53:11Z")

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Hi @cory.quammen,

It turns out you already have an account. It was created in 2010 and the associated username is `cquammen`

You should have received a password reset link.

(Ps: The Mantis message couldn’t definitively be improved and be more informative.)

Let us know if you have any other problem,  
Jc

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**Author:** ![cory.quammen](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cory.quammen/32/1557_2.png) [@cory.quammen](https://discourse.slicer.org/u/cory.quammen)\
**Post date:** [May 15, 2018, 2:08pm UTC](https://discourse.slicer.org/t/mantis-application-error-2800-invalid-form-security-token/2320/7 "2018-05-15T14:08:53Z")

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Ah, thanks for resetting my password. I should have checked first 🙂 Looks like I am all set.