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  <section id="upgrade-to-nextcloud-32">
<h1>Upgrade to Nextcloud 32<a class="headerlink" href="#upgrade-to-nextcloud-32" title="Link to this heading"></a></h1>
<section id="system-requirements">
<h2>System requirements<a class="headerlink" href="#system-requirements" title="Link to this heading"></a></h2>
<ul class="simple">
<li><p>PHP 8.1 is now deprecated but still supported.</p></li>
<li><p>PHP 8.4 is now supported, but 8.3 is recommended.</p></li>
</ul>
</section>
<section id="web-server-configuration">
<h2>Web server configuration<a class="headerlink" href="#web-server-configuration" title="Link to this heading"></a></h2>
<ul class="simple">
<li><p>Setup checks do not check for the <code class="docutils literal notranslate"><span class="pre">X-XSS-Protection</span></code> response header anymore. It has been removed from Nextcloud’s <code class="docutils literal notranslate"><span class="pre">.htaccess</span></code> and you may want to adjust your webserver config to not serve it anymore.
XSS filtering was supported only until Chromium 78 and similarly old browsers, but had been found to cause more issues, including attack vectors, than it solved.
Nowadays, aside of not serving the header at all, the only generally recommended value is <code class="docutils literal notranslate"><span class="pre">0</span></code>. More context can be found in the <a class="reference external" href="https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html#x-xss-protection">OWASP Cheat Sheet Series</a>.</p></li>
</ul>
</section>
<section id="monitoring-counting-of-active-users">
<h2>Monitoring: Counting of active users<a class="headerlink" href="#monitoring-counting-of-active-users" title="Link to this heading"></a></h2>
<p>The monitoring app was adjusted to count the active users in the same way as occ user:report and the support app.</p>
</section>
<section id="system-address-book">
<h2>System address book<a class="headerlink" href="#system-address-book" title="Link to this heading"></a></h2>
<p>During the upgrade to Nextcloud 32 the system address book might become disabled if the amount of system users exceeds the default limit of 5000 users. This is to prevent performance issues. You can re-enable the system address book using the command line or administration interface.</p>
<p>For more information about the system address book, see the documentation. <a class="reference internal" href="../groupware/contacts.html#system-address-book"><span class="std std-ref">System Address Book</span></a></p>
</section>
<section id="previews">
<h2>Previews<a class="headerlink" href="#previews" title="Link to this heading"></a></h2>
<p>Starting with Nextcloud 32.0.1, the preview provider for MP3 files, which reads cover images embedded in the files, is disabled by default for performance and stability reasons.
See <a class="reference internal" href="../configuration_files/previews_configuration.html"><span class="doc">Previews configuration</span></a> for details on how to enable or disable the preview provider.</p>
</section>
<section id="appapi-app-api-setup-checks-expanded">
<h2>AppAPI (app_api) setup checks expanded<a class="headerlink" href="#appapi-app-api-setup-checks-expanded" title="Link to this heading"></a></h2>
<p>Starting with Nextcloud 30.0.1, the AppAPI app is included and enabled by default. See <a class="reference internal" href="../exapps_management/index.html"><span class="doc">ExApps management</span></a> for details. Additionally, as of version 32.0.0, the AppAPI has expanded its setup checks.</p>
<p>You can disable this app in the standard manner via the <em>Apps</em> menu if you do not expect to use AppAPI integrations in the near future.</p>
<p>If AppAPI is disabled, other apps that depend on it will not be visible in the app store. AppAPI-related setup checks will also be deactivated.</p>
</section>
<section id="s3-integrity-protections-enabled-configuration-update-may-be-needed">
<h2>S3 integrity protections enabled, configuration update may be needed<a class="headerlink" href="#s3-integrity-protections-enabled-configuration-update-may-be-needed" title="Link to this heading"></a></h2>
<p>The AWS SDK for PHP was updated and now supports the data integrity protections for S3.</p>
<p>&gt;= Nextcloud 32.0.2: If your S3 backend does not support the data integrity protection, you can disable it by adding <code class="docutils literal notranslate"><span class="pre">'request_checksum_calculation'</span> <span class="pre">=&gt;</span> <span class="pre">'when_required',</span></code> and <code class="docutils literal notranslate"><span class="pre">'response_checksum_validation'</span> <span class="pre">=&gt;</span> <span class="pre">'when_required',</span></code> to the object store configuration.</p>
<p>&gt;= Nextcloud 32.0.3: S3 data integrity protections are disabled by default and are now opt-in.</p>
<p>If your S3 backend does not support this, you may see an error such as <code class="docutils literal notranslate"><span class="pre">Checksum</span> <span class="pre">Type</span> <span class="pre">mismatch</span> <span class="pre">occurred,</span> <span class="pre">expected</span> <span class="pre">checksum</span> <span class="pre">Type:</span> <span class="pre">null,</span> <span class="pre">actual</span> <span class="pre">checksum</span> <span class="pre">Type:</span> <span class="pre">crc32</span></code> in your logs when uploading files.</p>
<p>More details about data integrity protections for S3 can be found at <a class="reference external" href="https://docs.aws.amazon.com/sdkref/latest/guide/feature-dataintegrity.html">https://docs.aws.amazon.com/sdkref/latest/guide/feature-dataintegrity.html</a> and <a class="reference external" href="https://github.com/aws/aws-sdk-php/discussions/3100">https://github.com/aws/aws-sdk-php/discussions/3100</a>.</p>
</section>
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