# Release notes

## Changes in Nextcloud latest

A detailed log of all changes can be found in the official Changelog. There are also all current and previous versions linked.

### Updates to Nginx configuration

- In the Nginx configuration the Same-Origin header was added. Please add this line to your Nginx config: `add_header X-Frame-Options "SAMEORIGIN" always;` See Nginx configuration
- For improvements in serving HTTP requests the Nginx configuration now has HTTP 2 enabled. Please update your Nginx config accordingly. See Nginx configuration
- The GZip configuration for Nginx was updated. See Nginx configuration for details.

## Common questions

### Could not install core app bundle

The following error message is shown during the update: “Repair warning: Could not install core app bundle: Could not download app <app>”.

This basically means that Nextcloud could not fetch the app from the appstore automatically. This could have multiple reasons: either you disabled the appstore with the config.php flag or your server could not reach the app store. The instance will work fine, but the features that are usually provided by this app are not available.

## Theming changes

With Nextcloud 12, CSS files have been merged into one server.css so in order to keep your theme working you should consolidate your existing css styles into a server.css file. As for the example theme the styles.css file has been renamed to server.css.

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