Release of OMERO.server 5.6.4

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Today we are releasing OMERO.server 5.6.4 which uses OMERO.blitz 5.5.10 and includes omero-scripts 5.6.2 and Bio-Formats 6.9.1, see release announcement. The Bio-Formats Memoizer cache will be invalidated on upgrade from OMERO.server 5.6.3.

The OMERO pyramid generation process should be considered as deprecated, please read the recommendations on how to proceed with large images.

OMERO.server 5.6.4 runs in the same deployment environments as OMERO.server 5.6.0. It has been tested with 5.11.1 and OMERO.web 5.14.0 which includes support for Django 3.2.x, see the OMERO.web release announcement for more details. Both and OMERO.web are available from PyPI.

Installing the Software:

For full details of the changes with the OMERO 5.6 series see the OMERO 5.6.0 release announcement. Full documentation for this release is available under

This release has been tested with 5.11.1 and OMERO.web 5.14.0 so we recommend that you upgrade and OMERO.web to at least 5.11.1 and 5.14.0 on both server and web deployments.

Official Docker images are available as usual on Docker Hub with either the latest or the 5.6 tag:

You are invited to discuss this announcement on the forum.

All the best with your upgrades,

The OME Team

April 26, 2022

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