Multisite Network Localisation

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:

  1. WordPress multisite,one theme,and different languages?
  2. Localized WordPress content for different sub-locales of same language?
  3. 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?
  4. Multisite: How to get a list of installed languages
  5. Multisite WPLANG won’t save
  6. how to have __() translating in languages different from admin?
  7. String translation within WordPress multisite with i18n not working on all sites
  8. WPLANG option not available in localhost
  9. Whats a good strategy for localising WordPress post and page content?
  10. Moving a WP Multisite to a subdirectory
  11. $wpdb->base_prefix not get parent site prefix in multisite
  12. what are pmxi tables? [closed]
  13. Restrict Admin Capabilities in MultiSite
  14. Multisite 404 errors and non-www redirecting to home page
  15. Multisite, turn off “create new site”
  16. Hard Code Pages into a Theme for a Network (multisite) Installation
  17. Multisite with entirely different domains?
  18. Testing Multisites with vagrant or Can I use multisite with only an IP address (without domain name)
  19. How To Modify New Sub Blog Immediately When Super Administrator Creates It?
  20. Can you set up a wordpress (multi-site) network to work across multiple hosting accounts?
  21. No Network/Super admin after enabling Network
  22. Creating a Post form outside of the Admin
  23. How can I create a multisite global tag cloud?
  24. Possible to create a multisite network where the main site is non-WP?
  25. User registration on sub site
  26. Override database config for WordPress multisite
  27. ‘Remote Login’ with MultiSite Domain Mapping still forcing users to login to all blogs individually?
  28. Multiple WP Sites Same Server – Share WP Base?
  29. Bootstrapping WordPress MultiSite Outsite of WordPress – No $wpdb
  30. Poor performance on multisite install
  31. Super admin access to a forgotten WP instance?
  32. How to search users globally on a multisite install?
  33. Rest API Multisite Site List?
  34. Query users by capability – uninstall/deactivate callback
  35. Cannot access my first sub-site in a multisite [closed]
  36. Multisite setup help – plain domain/subsite always redirects to domain with subdir multisite
  37. Auto creation of multisite blog on user registration
  38. Memory question on WordPress Multisite
  39. How to protect post attachments related to a custom post type, from non-logged in users, on 1 subsite of a multisite installation?
  40. Multisite with 220+ sites painfully slow
  41. WordPress multisite on IIS – can’t open subpages
  42. Issues with Multisite installation and 403 error for REST API request
  43. How to run react app and headless WordPress and React App on same server (managed by plesk)?
  44. Nginx Wildcard SSL with WordPress Multisite Subdomains
  45. Multisite – Parent site with Polylang with different domains for each language [closed]
  46. How to disable wordpress cron jobs for a subsite?
  47. Multisite – create plugin to hide deactivated sites from the sites overview
  48. WordPress Mulitisite – Unable to create directory
  49. network site domain mapping still applied after being removed
  50. Can WordPress Multisite (MU) subdirectory url/slug/permalink be changed?
  51. Multisite Subdomain Redirect Mask
  52. How to use HyperDB plugin in a existing wpmu
  53. Sort by site/blog column in Multisite
  54. Possibility of Create Site Specific CSS in a Multisite
  55. Add access control origin header information across multisite
  56. Get post by term from custom taxonomy in another blog on the network?
  57. Two wordpress mu installs, same settings/plugins/themes?
  58. Multi Network plugin: “Network not created” [closed]
  59. Https and Http Login Issue on WordPress Multisite
  60. How can I use different domains on a WP multisite install?
  61. Multisite network admin – User’s role not showing up
  62. Is it possible to install WordPress MU on a subdomain?
  63. WordPress multisite with same content
  64. Redirecting to page not found mulitiste
  65. How many .htaccess files should a WordPress multisite (subdirectory set up) have?
  66. Multisite and Multidomains WordPress
  67. mu activate / deactivate plugins in multisite network mode only
  68. Is there any hook to validate google recaptcha dislayed in wp-signup page [in WordPress Multisite]
  69. Primary (root) blog of multisite installation forbidden (403)
  70. Duplicate/Clone a Multi-site But Use Same Images & Resources?
  71. How do I split a single WPML site with 6 languages (English is Main) into Multisite with 5 subfolders
  72. WordPress Multisite with Subdomain, make the subdomain look like another domain
  73. Login issues on WordPress Multisite and domain mapping
  74. How To Upload Existing WordPress Site To WordPress Multisite Using SSH
  75. Change header.php of a specific WordPress Multisite
  76. Multisite htaccess with domain rewrites
  77. Proper setup of multi doman site
  78. fatal Error undefined function switch_to_blog()
  79. Do “switch_to_blog()” and “restore_current_blog()” re-run the filters?
  80. Move two independent sites to network
  81. Why does defining MULTISITE true change the database connection in use
  82. WordPress Multisite Cron Issue
  83. New Site URL for Multisite
  84. Make a select where the options are the different multisites
  85. How to install wpengine hosted multisite locally
  86. Different page content for default pages on WordPress Multisite
  87. WordPress showing strange characters – UTF8
  88. Nginx Multisite redirects (incorrectly) on Chrome IE and Mobile, but works (correctly) on Firefox
  89. Permalinks in Multisite not working
  90. Setting up wordpress on a hosting server for the first time
  91. Is there a full explanation on how to share a database with two WordPress sites on same server?
  92. WordPress Multisite – How to backup only 1 child website database (not everything)?
  93. How to tweak page links in WordPress Multisite
  94. WordPress multisite broken after network update?
  95. How to set an option for all sites in my Multisite network?
  96. Does the ‘init’ hook works for all sites in multisite?
  97. I’m getting a 404 NOT_FOUND CODE: ‘DEPLOYMENT NOT FOUND on wordpress multisite installation on my sub domain
  98. Multisite subsite expiration
  99. Iterating over every multisite / theme and list the pages
  100. Multisite subdomain site on secondary domain