Many posts include a link to a page in the ANSYS 19.1 Help system.
These links take me to the customer portal login shown below.
Students can't get an account on the portal. Fortunately, ANSYS Student 19.1 Help logs them in somehow.
Here is the workaround to get to the help page cited.
1. From Workbench, use the menu Help > ANSYS Workbench Help. A browser window will open.
2. In the post that has a link to ANSYS Help, RMB on the link and select Copy Link Address,
3. Go to the browser window that opened in step 1 and Paste in the address bar and you get to the required page.