---
title: "TYPO3 Exception 1533822084"
manual: "TYPO3 Exceptions"
version: "main"
permalink: "https://docs.typo3.org/permalink/t3exceptions:typo3-exception-1533822084"
source: "Exceptions/1533822084.rst"
rendered: "2026-10-02T18:04:37+00:00"
---

# TYPO3 Exception 1533822084 {#typo3-exception-1533822084}

> [!NOTE]
> Below, the TYPO3 community may have provided additional information or
> solutions for this exception. However, these may or may not apply to your
> particular case. If you can provide more information, you should come back
> here and add your experience and solution steps to this issue once you have
> resolved it.
>
> General TYPO3 troubleshooting tips can be found in the *Troubleshooting*
> section in the menu. You can also ask questions and receive support in the
> [TYPO3 Questions category on talk.typo3.org](https://talk.typo3.org/c/typo3-questions/).
>
> To add your experience, click "Edit on GitHub" above and follow the
> ["Edit on GitHub" workflow](https://docs.typo3.org/m/typo3/docs-how-to-document/main/en-us/Howto/EditOnGithub.html#docs-contribute-github-method).
> Also check out
> [our tip on Coding Style and reST](https://docs.typo3.org/permalink/t3exceptions:tip-about-rest-coding-style).

## Argon2iPasswordHash is not available {#argon2ipasswordhash-is-not-available}

The following exception may bubble up since TYPO3 v9 during login:

```
#1533822084 TYPO3\CMS\Core\Crypto\PasswordHashing\InvalidPasswordHashException
Configured default hash method
TYPO3\CMS\Core\Crypto\PasswordHashing\Argon2iPasswordHash is not
available. If the instance has just been upgraded, please log in to the
standalone install tool at typo3/install.php to fix this.

```

## Explanation {#explanation}

If an instance has just been upgraded and if *argon2i* hash mechanism is
not available locally, the default backend will still try to upgrade a
given user password to *argon2i* if the install tool has not been
executed once.

## Reasons {#reasons}

This typically happens only if a system has just been upgraded and a
backend login is performed before the install tool has executed silent
upgarde wizards.

## Solutions {#solutions}

Please see [Password hashing troubleshooting](https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/PasswordHashing/Troubleshooting.html#password-hashing-troubleshooting).

## More information {#more-information}

-   [Official password hashing documentation since TYPO3
    v9](https://docs.typo3.org/typo3cms/CoreApiReference/ApiOverview/PasswordHashing/Index.html)
-   [Issue explaining the deployment
    problem](https://forge.typo3.org/issues/86155)