@EDIT: it finally worked. I just needed to clear Magento's cache. In case you need to do so, go to /var/cache and delete everything there, and then start again.
I installed Magento 2 with WAMP server on Windows 10. I installed it with sample data, and I can properly access the example page on
http: //localhost/magento. But when I try to access the backend with the admin url, I get the message "Cannot access the page" from the browser (no matter which).
On installing, th url for admin was set to https:
As it didn't work, I thought of enabling ssl_module on wamp, but it didn't work and Apache stopped working. So I unenabled it again.
After that, I went to phpMyAdmin, magento databse,
core_config_data table, and changed
web/secure/use_in_adminhtml value to 0. I also tried NULL. I still could not access the admin page. I have read several posts in forums and still cannot figure out what is happening. I checked
mod_rewrite in Apache too, but I didn't see any effect. I am a bit new in using servers, PHP and MySQL.
If I access
http: //localhost/magento/admin_abcd1234 the browser changes to
https: //localhost/magento/admin_abcd1234 after few seconds.