SYMPTOM:
A user has "No access granted" for a project as designated by a column of gray X's in the User Editor's Project Access subcategory in Strategy Developer 9.x. A user may wonder why the X's are sometimes gray, whereas they are normally red.
CAUSE:
This is working by design. By default, all users are a part of the Normal Users security role. This security role does not give any project access by default, but when a User is a part of any security role, their access will show as a red x for each row and Security Role Selection will show "+ Inherited Access". If a user is removed from all security roles and user groups, then their access will show as a gray X for each row. Note the difference below:

ACTION:
No action is necessary, but the following steps can be used to place the user back in the default Normal Users security role:
1. In the Desktop Folder List, for the project source in question, navigate to Administration > Configuration Managers > Security Roles.
2. Right-click on Normal Users and click on the Members tab.
3. Select a Project, and move Groups or Users to the right (Selected members) side. Note that the Everyone group is present here by default.