ownCloud 9.1.x (known issues, faq and upgrade problems)

Blogpost about upgrading: https://owncloud.org/blog/time-to-upgrade-to-owncloud-9-0/

General changes in this release: https://doc.owncloud.org/server/9.1/admin_manual/release_notes.html

Another blogpost how to do a correct upgrade: http://blog.jospoortvliet.com/2016/01/how-to-upgrade-owncloud-dont-skip.html

Please read those links carefully!!!

There were problems with the code integrity check. More information…

ownCloud 9 has introduced a code signing and integrity check feature to help you identify modified and corrupted files. If you're getting the mentioned error please see:


More info about code signing are available here: https://owncloud.org/blog/code-signing-in-owncloud-9-0/

Common issues

On every major upgrade it is recommended to do a full upgrade by deleting all files and folders within your installation directory except /data/ and /config/ and then extract the new code into this installation directory. How to do a full upgrade can be found at the documentation:


Updates between multiple major versions and downgrades are unsupported.

Please see:

Known Bugs

A list of bugs to fix or features to include for 9.1.2 is available here: https://github.com/owncloud/core/milestones/9.1.2

Already fixed Bugs

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