TYPO3 Exception 1533818591¶
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 section "Troubleshooting" of the menu, and live support is available in the TYPO3 Slack channel #typo3-cms. (See How to get your TYPO3 Slack account.)
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InvalidPasswordHashException: No implementation found that handles given hash¶
The following exception may bubble up since TYPO3 v9 during login:
#1533818591 TYPO3\CMS\Core\Crypto\PasswordHashing\InvalidPasswordHashException
No implementation found that handles given hash. This happens if the
stored hash uses a mechanism not supported by current server.
Explanation¶
A frontend user, a backend user or the install tool password hash is stored using a mechanism not supported by the current server. The login process can not compare the given password with the stored hash.
Reasons¶
This typically happens if a TYPO3 upgrade is performed on a system that supports the default hash mechanism argon2i, passwords in the database and/or the install tool password is updated to use this hash, and the system is then deployed to a system that does not support argon2i.
Solutions¶
Please see Password hashing troubleshooting.