This is a very critical issue.
I recently upgraded from Magento CE 2.2.5 to CE 2.2.6 using the Web Setup Wizard.
The upgrade went fine and the site is working.
When I try to access Web Setup Wizard in 2.2.6, I get a 404 Not Found response.
What I already tried:
- I removed all files and contents from
- I cleaned Magento cache
- I tried accessing the setup from a different browser
- Tried solutions such as accessing through http and https and activated/deactivated
HTTP Strict Transport Security
- The Document Root points to
Please note that I have a test instance on a different machine, this one was upgraded to 2.2.6 using composer. On this instance,
/setup/ is working fine.