This is a problem with the /administrator folder password protection. Please rename the file /administrator/.htaccess to bypass the error. Note, that's the /administrator folder, NOT the root.
You can reestablish the password protection from the Admin Tools Control Panel. That feature works on most servers, but not all. If you get the error again, you should ask your host if it is supported.
Dale L. Brackin
Support Specialist
English: native
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!
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My time zone is
EST (UTC -5) (click here to see my current time in Philadelphia, PA)