--- a/Sphinx/source/contributing.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/contributing.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -54,8 +54,8 @@
   - Cite the `reference paper about Orthanc
     <https://link.springer.com/article/10.1007/s10278-018-0082-y>`__
     in your research work.
-  - Answer questions posted to the `mailing list
-    <https://groups.google.com/forum/#!forum/orthanc-users>`_.
+  - Answer questions posted to the `Orthanc Users discussion forum
+    <https://discourse.orthanc-server.org>`__.
 
     - **Important**: A page list the :ref:`old questions that are not
       fully answered yet <unanswered_forum>`. Consider answering these
@@ -158,8 +158,8 @@
     creating external software that use the REST API**. If the current
     plugin SDK is insufficient for you to develop some feature as a
     plugin, do not hesitate to request an extension to the Orthanc SDK
-    on the `mailing list
-    <https://groups.google.com/forum/#!forum/orthanc-users>`_.
+    on the `Orthanc Users discussion forum
+    <https://discourse.orthanc-server.org>`__.
 
 
 * **Financial support**: 

--- a/Sphinx/source/developers/repositories.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/developers/repositories.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -236,8 +236,8 @@
 
 Once the patch is ready, you can send the ``/tmp/contribution.patch``
 file to the Orthanc community, e.g. by submitting it onto our official
-`discussion group
-<https://groups.google.com/forum/#!forum/orthanc-users>`__. The core
+`Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__. The core
 developers would reintegrate such a patch by typing the following
 command on their side::
 
@@ -325,6 +325,6 @@
 
 Before posting any issue, make sure to carefully, completely read the
 :ref:`page about how to ask support <support>`. In particular, most
-issues should first be discussed on the dedicated `discussion group
-<https://groups.google.com/forum/#!forum/orthanc-users>`__ before
+issues should first be discussed on the dedicated `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__ before
 introducing a bug report.

--- a/Sphinx/source/faq/crash.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/crash.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -93,8 +93,8 @@
   ...
 
 If you are unable to analyze such a backtrace by yourself, feel free
-to post your ``core`` file on the `Orthanc forum
-<https://groups.google.com/forum/#!forum/orthanc-users>`__.
+to post your ``core`` file on the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__.
 
 **Important:** The Orthanc developers will only be able to analyze the
 ``core`` files generated by our own precompiled binaries!

--- a/Sphinx/source/faq/debugging.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/debugging.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -60,8 +60,8 @@
   ...
 
 If you are unable to analyze such a backtrace by yourself, feel free
-to post your backtrace on the `Orthanc forum
-<https://groups.google.com/forum/#!forum/orthanc-users>`__.
+to post your backtrace on the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__.
 
 **Plugins:** Besides the Orthanc core, debug binaries of the official
 plugins precompiled using the LSB are also available at the following

--- a/Sphinx/source/faq/dicom.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/dicom.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -51,8 +51,8 @@
 * Check out the :ref:`more generic troubleshooting guide
   <troubleshooting>`.
 
-As a last resort, please contact the `mailing list
-<https://groups.google.com/forum/#!forum/orthanc-users>`_ by sending a
+As a last resort, please contact the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__ by sending a
 detailed description of your problem, notably:
 
 * What fails: The sending of a file (aka. C-Store SCU), the searching

--- a/Sphinx/source/faq/licensing.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/licensing.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -266,6 +266,6 @@
   Orthanc.
 
 * In the case of a doubt wrt. a potential contribution, please discuss
-  it on the `Orthanc Users
-  <https://groups.google.com/forum/#!forum/orthanc-users>`__
+  it on the `Orthanc Users discussion forum
+  <https://discourse.orthanc-server.org>`__
   discussion group before starting the actual development.

--- a/Sphinx/source/faq/proprietary.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/proprietary.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -17,9 +17,9 @@
 best possible compatibility with other FOSS software. To put it in
 other words, we **provide free support for interfacing Orthanc with
 other free and open-source software**. Feel free to discuss
-interoperability problems of Orthanc with other FOSS tools on `our
-discussion group
-<https://groups.google.com/forum/#!forum/orthanc-users>`_, or to
+interoperability problems of Orthanc with other FOSS tools on our `Orthanc 
+Users discussion forum
+<https://discourse.orthanc-server.org>`__, or to
 introduce :ref:`bug reports <support>` detailing how to reproduce your
 problem.
 

--- a/Sphinx/source/faq/scalability.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/scalability.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -19,8 +19,8 @@
 <https://www.orthanc-server.com/static.php?page=contact>`__ if you can
 share other testimonials). Other users have even reported more than
 28TB of data. Here are links to some testimonials that were published
-on the `Orthanc Users
-<https://groups.google.com/forum/#!forum/orthanc-users>`__ discussion
+on the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__ discussion
 group: `1
 <https://groups.google.com/d/msg/orthanc-users/-L0D1c2y6rw/KmWnwEijAgAJ>`__,
 `2

--- a/Sphinx/source/faq/troubleshooting.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/faq/troubleshooting.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -7,8 +7,8 @@
 you use the `most recent version
 <https://www.orthanc-server.com/download.php>`__ of Orthanc.
 
-Also make a search on the `Orthanc Users discussion group
-<https://groups.google.com/forum/#!forum/orthanc-users>`__, and make a
+Also make a search on the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__, and make a
 search in the present Orthanc Book (there is a search field at the top
 of this page). Your issue might indeed have already been discussed in
 the past or in the FAQ.

--- a/Sphinx/source/plugins/python.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/plugins/python.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -53,9 +53,8 @@
 We suggest you to put the source code of your Python scripts on the
 dedicated `"OrthancContributed" repository on GitHub
 <https://github.com/jodogne/OrthancContributed/tree/master/Plugins>`__,
-and/or to send it to the `Orthanc Users
-<https://groups.google.com/forum/#!forum/orthanc-users>`__ discussion
-group.
+and/or to send it to the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__.
 
 Check out the :ref:`FAQ about licensing <licensing>` for more context.
 

--- a/Sphinx/source/unanswered-forum.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/unanswered-forum.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -10,8 +10,8 @@
 ---------
 
 This page lists the questions (since 2018) that are still looking for
-an answer on the `Orthanc Users discussion group
-<https://groups.google.com/forum/#!forum/orthanc-users>`__.
+an answer on the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__.
 
 Threads that are not answered in a satisfying manner after a few weeks
 are indexed here by the core maintainers of Orthanc, in order to avoid

--- a/Sphinx/source/users/support.rst	Mon Sep 25 16:16:31 2023 +0200
+++ b/Sphinx/source/users/support.rst	Thu Sep 28 16:19:58 2023 +0200
@@ -29,7 +29,7 @@
    <faq>` that are already available in the Orthanc Book.
 8. Make a search for similar problem previously discussed in the
    `Orthanc Users discussion forum
-   <https://groups.google.com/forum/#!forum/orthanc-users>`__.
+   <https://discourse.orthanc-server.org>`__.
 9. Check out the ``Pending changes in the mainline`` section of the
    `NEWS file
    <https://hg.orthanc-server.com/orthanc/file/default/NEWS>`__, as
@@ -59,8 +59,8 @@
    
 If none of these resources help, you can consider sending a message to
 the `Orthanc Users discussion forum
-<https://groups.google.com/forum/#!forum/orthanc-users>`__. In such a
-situation, you **must** provide a `minimal working example
+<https://discourse.orthanc-server.org>`__. 
+In such a situation, you **must** provide a `minimal working example
 <https://en.wikipedia.org/wiki/Minimal_working_example>`__, which means that
 you must provide all the following information:
 
@@ -122,8 +122,8 @@
 consider directly introducing a `bug report on our issue tracker
 <https://bugs.orthanc-server.com/enter_bug.cgi>`__. Beware however
 that your issue might be closed if too vague or if not reproducible.
-As a consequence, it is strongly advised to use the `discussion forum
-<https://groups.google.com/forum/#!forum/orthanc-users>`__ in the
+As a consequence, it is strongly advised to use the `Orthanc Users discussion forum
+<https://discourse.orthanc-server.org>`__ in the
 first place.
 
 
@@ -138,7 +138,7 @@
 1. If you have a **reproducible issue** for which you can provide a
    :ref:`minimal working example <support-mwe>` using only free and
    open-source tools, use the `Orthanc Users discussion forum
-   <https://groups.google.com/forum/#!forum/orthanc-users>`__.
+   <https://discourse.orthanc-server.org>`__.
 
 2. If you need an **additional feature implemented in Orthanc**, and
    if you are ready to pay, get in touch with the `Orthanc Team