Re-saving the language of the first site with the ID #1 solved the problem.
One can do this within Settings » General » Site Language
Related Posts:
- WordPress multisite,one theme,and different languages?
- Localized WordPress content for different sub-locales of same language?
- Multisite: How can I have the admin bar (toolbar) use the language of the user instead of the language of the sub-site being viewed?
- Multisite: How to get a list of installed languages
- Multisite WPLANG won’t save
- how to have __() translating in languages different from admin?
- String translation within WordPress multisite with i18n not working on all sites
- WPLANG option not available in localhost
- Whats a good strategy for localising WordPress post and page content?
- Moving a WP Multisite to a subdirectory
- $wpdb->base_prefix not get parent site prefix in multisite
- what are pmxi tables? [closed]
- Restrict Admin Capabilities in MultiSite
- Multisite 404 errors and non-www redirecting to home page
- Multisite, turn off “create new site”
- Hard Code Pages into a Theme for a Network (multisite) Installation
- Multisite with entirely different domains?
- Testing Multisites with vagrant or Can I use multisite with only an IP address (without domain name)
- How To Modify New Sub Blog Immediately When Super Administrator Creates It?
- Can you set up a wordpress (multi-site) network to work across multiple hosting accounts?
- No Network/Super admin after enabling Network
- Creating a Post form outside of the Admin
- How can I create a multisite global tag cloud?
- Possible to create a multisite network where the main site is non-WP?
- User registration on sub site
- Override database config for WordPress multisite
- ‘Remote Login’ with MultiSite Domain Mapping still forcing users to login to all blogs individually?
- Multiple WP Sites Same Server – Share WP Base?
- Bootstrapping WordPress MultiSite Outsite of WordPress – No $wpdb
- Poor performance on multisite install
- Super admin access to a forgotten WP instance?
- How to search users globally on a multisite install?
- Rest API Multisite Site List?
- Query users by capability – uninstall/deactivate callback
- Cannot access my first sub-site in a multisite [closed]
- Multisite setup help – plain domain/subsite always redirects to domain with subdir multisite
- Auto creation of multisite blog on user registration
- Memory question on WordPress Multisite
- How to protect post attachments related to a custom post type, from non-logged in users, on 1 subsite of a multisite installation?
- Multisite with 220+ sites painfully slow
- WordPress multisite on IIS – can’t open subpages
- Issues with Multisite installation and 403 error for REST API request
- How to run react app and headless WordPress and React App on same server (managed by plesk)?
- Nginx Wildcard SSL with WordPress Multisite Subdomains
- Multisite – Parent site with Polylang with different domains for each language [closed]
- How to disable wordpress cron jobs for a subsite?
- Multisite – create plugin to hide deactivated sites from the sites overview
- WordPress Mulitisite – Unable to create directory
- network site domain mapping still applied after being removed
- Can WordPress Multisite (MU) subdirectory url/slug/permalink be changed?
- Multisite Subdomain Redirect Mask
- How to use HyperDB plugin in a existing wpmu
- Sort by site/blog column in Multisite
- Possibility of Create Site Specific CSS in a Multisite
- Add access control origin header information across multisite
- Get post by term from custom taxonomy in another blog on the network?
- Two wordpress mu installs, same settings/plugins/themes?
- Multi Network plugin: “Network not created” [closed]
- Https and Http Login Issue on WordPress Multisite
- How can I use different domains on a WP multisite install?
- Multisite network admin – User’s role not showing up
- Is it possible to install WordPress MU on a subdomain?
- WordPress multisite with same content
- Redirecting to page not found mulitiste
- How many .htaccess files should a WordPress multisite (subdirectory set up) have?
- Multisite and Multidomains WordPress
- mu activate / deactivate plugins in multisite network mode only
- Is there any hook to validate google recaptcha dislayed in wp-signup page [in WordPress Multisite]
- Primary (root) blog of multisite installation forbidden (403)
- Duplicate/Clone a Multi-site But Use Same Images & Resources?
- How do I split a single WPML site with 6 languages (English is Main) into Multisite with 5 subfolders
- WordPress Multisite with Subdomain, make the subdomain look like another domain
- Login issues on WordPress Multisite and domain mapping
- How To Upload Existing WordPress Site To WordPress Multisite Using SSH
- Change header.php of a specific WordPress Multisite
- Multisite htaccess with domain rewrites
- Proper setup of multi doman site
- fatal Error undefined function switch_to_blog()
- Do “switch_to_blog()” and “restore_current_blog()” re-run the filters?
- Move two independent sites to network
- Why does defining MULTISITE true change the database connection in use
- WordPress Multisite Cron Issue
- New Site URL for Multisite
- Make a select where the options are the different multisites
- How to install wpengine hosted multisite locally
- Different page content for default pages on WordPress Multisite
- WordPress showing strange characters – UTF8
- Nginx Multisite redirects (incorrectly) on Chrome IE and Mobile, but works (correctly) on Firefox
- Permalinks in Multisite not working
- Setting up wordpress on a hosting server for the first time
- Is there a full explanation on how to share a database with two WordPress sites on same server?
- WordPress Multisite – How to backup only 1 child website database (not everything)?
- How to tweak page links in WordPress Multisite
- WordPress multisite broken after network update?
- How to set an option for all sites in my Multisite network?
- Does the ‘init’ hook works for all sites in multisite?
- I’m getting a 404 NOT_FOUND CODE: ‘DEPLOYMENT NOT FOUND on wordpress multisite installation on my sub domain
- Multisite subsite expiration
- Iterating over every multisite / theme and list the pages
- Multisite subdomain site on secondary domain