External Storage => "Internal Server error"

[GRuetten]

Hi all,

several years ago external storage support stopped to work properly and even with several major release changes in between i’m still getting the same error.

Now i would like to use this feature and need some support to find the root cause and a solution how to fix.

Is there anyone out there who can help me ? I saw that there are a lot of similiar questions raised from other people, but i couldn’t find anything about how to fix.

Many thanks,
Gereon

{“reqId”:“TWpTT606jdABKdICUncP”,“level”:0,“time”:“2023-05-20T14:30:14+02:00”,“remoteAddr”:“xxx.xxx.xxx.xxx”,“user”:“xxxx”,“app”:“music”,“method”:“GET”,“url”:“/settings/user/externalstorages”,“message”:“/appinfo/app.php is deprecated, use \OCP\AppFramework\Bootstrap\IBootstrap on the application class instead.”,“userAgent”:“Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0”,“version”:“26.0.1.1”,“data”:{“app”:“music”}}
{“reqId”:“TWpTT606jdABKdICUncP”,“level”:3,“time”:“2023-05-20T14:30:14+02:00”,“remoteAddr”:“xxx.xxx.xxx.xxx”,“user”:“xxxx”,“app”:“index”,“method”:“GET”,“url”:“/settings/user/externalstorages”,“message”:“HMAC does not match.”,“userAgent”:“Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0”,“version”:“26.0.1.1”,“exception”:{“Exception”:“Exception”,“Message”:“HMAC does not match.”,“Code”:0,“Trace”:[{“file”:“/var/www/nextcloud/lib/private/Security/Crypto.php”,“line”:134,“function”:“decryptWithoutSecret”,“class”:“OC\Security\Crypto”,“type”:“->”,“args”:[“*** sensitive parameters replaced “]},{“file”:”/var/www/nextcloud/lib/private/Security/CredentialsManager.php",“line”:104,“function”:“decrypt”,“class”:“OC\Security\Crypto”,“type”:“->”,“args”:[" sensitive parameters replaced ***”]},{“file”:“/var/www/nextcloud/apps/files_external/lib/Lib/Auth/Password/GlobalAuth.php”,“line”:55,“function”:“retrieve”,“class”:“OC\Security\CredentialsManager”,“type”:“->”},{“file”:“/var/www/nextcloud/apps/files_external/lib/Settings/Personal.php”,“line”:79,“function”:“getAuth”,“class”:“OCA\Files_External\Lib\Auth\Password\GlobalAuth”,“type”:“->”},{“file”:“/var/www/nextcloud/apps/settings/lib/Controller/CommonSettingsTrait.php”,“line”:129,“function”:“getForm”,“class”:“OCA\Files_External\Settings\Personal”,“type”:“->”},{“file”:“/var/www/nextcloud/apps/settings/lib/Controller/PersonalSettingsController.php”,“line”:73,“function”:“formatSettings”,“class”:“OCA\Settings\Controller\PersonalSettingsController”,“type”:“->”},{“file”:“/var/www/nextcloud/apps/settings/lib/Controller/CommonSettingsTrait.php”,“line”:149,“function”:“getSettings”,“class”:“OCA\Settings\Controller\PersonalSettingsController”,“type”:“->”},{“file”:“/var/www/nextcloud/apps/settings/lib/Controller/PersonalSettingsController.php”,“line”:64,“function”:“getIndexResponse”,“class”:“OCA\Settings\Controller\PersonalSettingsController”,“type”:“->”},{“file”:“/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php”,“line”:230,“function”:“index”,“class”:“OCA\Settings\Controller\PersonalSettingsController”,“type”:“->”},{“file”:“/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php”,“line”:137,“function”:“executeController”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:“->”},{“file”:“/var/www/nextcloud/lib/private/AppFramework/App.php”,“line”:183,“function”:“dispatch”,“class”:“OC\AppFramework\Http\Dispatcher”,“type”:“->”},{“file”:“/var/www/nextcloud/lib/private/Route/Router.php”,“line”:315,“function”:“main”,“class”:“OC\AppFramework\App”,“type”:“::”},{“file”:“/var/www/nextcloud/lib/base.php”,“line”:1056,“function”:“match”,“class”:“OC\Route\Router”,“type”:“->”},{“file”:“/var/www/nextcloud/index.php”,“line”:36,“function”:“handleRequest”,“class”:“OC”,“type”:“::”}],“File”:“/var/www/nextcloud/lib/private/Security/Crypto.php”,“Line”:169,“CustomMessage”:“–”}}

[jtr]

You’ll need to provide much more information on your installation.

• How you installed Nextcloud
• Host OS
• PHP version
• Redacted config.php (i.e. ./occ config:list system
• What external storage provider

Also appears you may be using encryption:

• Are you setting up a new external storage or is this a previously configured one?
• Have you recently migrated your data to a new NC installation by chance?

"HMAC does not match." after server migration

Hi, I have found similar posts in the past, but my situation is a little bit different: I had an installation on my own server that I maintained, updated etc. myself. Now, I have a different hosting contract where I can make use of a feature where I can get popular apps pre-setup by the hoster (in fact, that seems to be a 3rd party tool called “installotron”) which has the advantage that NC will be automatically updated. This is what I did so far: Made complete backups of the old installatio…

External Storage - HMAC does not match

Hmm that doesn’t work for me. When i try that the whole Cloud give me a Server Error…

https://docs.nextcloud.com/server/stable/admin_manual/issues/general_troubleshooting.html#troubleshooting-downloading-or-decrypting-files

[jtr]

Is your secret blank by chance in your config.php?

[Bug]: Opening external storage produces an error: 'HMAC does not match'

[GRuetten]

Hi,

many thanks for your help and to wipe the table “oc_storages_credentials” solved my problem

Best regards,

Gereon

[ncfuser]

Hi ,
Unfortunately I have the same problem, I can no longer configure external storages. When I go to the settings as admin, I get an internal server error.
With which provider? Local
On which hardware? Raspberry PI4 + 1TB SSD
Operating system raspiOS
Nextcloud version: 27.1.4

just to make sure I understand this correctly. By “wipe” do you mean drop table or delete columns ? you probably don’t mean drop table, because I tested that yesterday and after that I could no longer log in to the nextcloud server. All users got an internal server error. but restoring the table fixed the problem again.