The problem was caused by the change to permalinks.
When I changed it to /%category%/%postname%/, it worked.
Related Posts:
- How to delete post revisions?
- How to get blog name, when using WordPress Multisite
- Which asset URLs are acceptable in a “vanilla” MU install?
- Using MAMP and Xip.io to view a WordPress Multisite on a local network
- Upload path/URL weirdness for the main blog of a multisite/network setup
- WP_Site_Query vs. WP_Network_Query in WordPress 4.6
- Multisite/network–automatic self-registration, blog setup
- COOKIE_DOMAIN setting confusion
- REST API for Multisite
- Possible to make custom role in multisite that can add sites?
- Multisite: use media from one site vs. copying the same media to all language sites?
- Nginx rules for subdomain multisite install (Bedrock)
- “Upgrade Network” error: stuck with SSL certificate verification
- when using add_user_to_blog getting error “Call to undefined function get_userdata”
- Restrict the user access in multi site for non-assigned blogs
- Set multisite settings when new site created
- SQL to check how many sites a user is a member of
- Getting an ERROR: Cookies are blocked error when logging in to a site on a different domain?
- display merged posts from multisite and sort by latest date
- What type of Google tracking should I use?
- Force Uploads Use Yearmonth to off (0) for all existing sites in Multisites
- convert from single site to multisite (network) with existing subdomains
- WordPress Multisite – Multiple Subdirectories
- Images uploading to wrong directory after changing to multisite
- Changing admin sub-domain in WordPress multisite
- Why are images uploaded to main domain, when using multisite with different domains?
- Subdomain login problems
- Yoast Sitemap grouping external sitemaps [closed]
- Change Username?
- How to Redirect login User with Mapped Domiain Primary blog Url to Original Sub-site Url
- Determining the compatibility of Settings API & Multisite
- Update User Role Across Network when Main Site User is Updated
- Shared User Tables on 2 WordPress Sites; “Main” Site and “Discuss” using P2?
- Get the User ID Who Owns a Given Blog ID in Multisite
- Create custom role, multisite, add users/sites?
- https redirect hell (adding www)
- Redirect subdomain in Multisite installation?
- Will revisions be retained when converting to a multi-site?
- Multisite on localhost using xampp
- Include only a domain path in multisite Network
- Jetpack API for WordPress Network
- How can I automatically duplicate a site’s pages onto network site?
- Gravity Forms: gform_wrapper stays hidden even though JS-scripts load without errors
- Multisite User cannot access dashboard
- WordPress Multisite logout conflict
- SEO implications of assigning a new domain to a multisite subdomain [closed]
- How can I add custom meta on signup page and pass along to be used after blog activation?
- How to check main blog in a multisite using if statement?
- MULTISITE SUB-DOMAIN JUST SHOWS INDEX OF -> CGI-BIN INSTEAD OF SHOWING SITE
- How do I check if the user is a site owner in a network?
- Handling single.php in Multisite
- Multisite – Multiple logo?
- One Site as a part of Multisite to be hidden (Un-published) from Public?
- Multisite signup spam troubles
- Is there is a way to group a large number of WordPress Multisites For Easier Organisation?
- Different Domains in Multisite Setup
- Multisite on single wordpress
- How to pull data from child installation to parent theme
- Which is the correct way to migrate content from single WP to WP multisite
- How to have one installation at blog.example.com and multiple blogs in sub folders such as blog.example.com/userA?
- Website not listed under Sites (in a Network environment)
- Running hundreds of WP in multisite
- Give users acces to admin a single post or set up WP network?
- WordPress Multisite for multi-language
- get_site_option / update_site_option – the main site and sub sites do not share the same storage
- Bitnami multisite change URL of secondary blog
- Can I use the main Multisite as a backend only?
- Number of total comment does not tally with the number of comment?
- Downloading customized theme from wordpress
- Domain not redirected correctly with WordPress Multisite
- Subsites in Multisite throw 404 in wp-admin
- WordPress theme to support single website but with 3 sections for 3 languages
- Can assign a new domain to a site in a multisite?
- Possible to have duplicate usernames on different two multisites
- Main site media are accessible in subsite domain
- WordPress multisite condition for certain blog_id’s
- the menu of the network does not display my second website
- Multisite – site user limited only for this site
- Update siteurl and home in multisite subsites to https
- WordPress multi-domain with multiple sites with multiple languages
- Including non-wordpress pages within a single multisite domain
- Get variable from previous blog while using switch_to_blog
- Domain level problem for multisite?
- How can I import posts into different wordpress multisites at once?
- Redirect www.mainsite.com/subsite/wp-login to www.mainsite.com/wp-login
- WordPress multisite not working
- Activation of new Registered site fails on multisite
- New multisite redirects to main site
- How to login a user with wp_set_auth_cookie on a specific blog within a multisite environment
- How to disable style filtering in post?
- How does adding custom meta to signup form work?
- Can’t un-archive site after upgrading to WordPress 3.8
- How to handle responsive and non responsive websites in one WordPress Theme?
- Create a Network of Different websites with wordpress
- WP Multisite: Do a function after blog is activated
- How to login Separately in each blog?
- Cookies in Multisite network where sites have their own domain name?
- Swap domains of two sites with each other in multisite
- Many big issues in the website, WP_Debug not showing
- Run WordPress multisite from secondary volume on AWS EC2