404 Error in admin Page

[Gabriel Calero]

Hello friends,

Im having an issue when im trying to access my BO:

• Everytime i open www.mywebsite/adminxxx/....  as i used to do the webpage shows a 404 error not found, to have some context:
  • The webpage FO is working fine
  • Havent made changes via FTP or in htaccess 
  • It worked fine until last week
  • I updated my page to 1.7 in november last year
  • i´ve checked if the url is correct with the folder name and also added a test.txt file to it as a test if i can access it and i can see the file 
  • I cleaned the caché and cookies of my browser (not in my website)
  • I dont really know which version of 1.7 i have installed

Please someone help, i´ve read some forum topics that says it fixed automatically but i´ve been waiting a week.