1: <html>
2: <head>
3: <title>LON-CAPA Login Problems</title>
4: <script>
5: function openwin() {
6: var testwin=window.open('/adm/rat/empty.html','test','menubar=0,width=200,height=100');
7: testwin.document.clear();
8: testwin.document.writeln('PASSED TEST');
9: testwin.document.close();
10: testwin.focus();
11: }
12: </script>
13: </head>
14: <body bgcolor="#FFFFFF">
15: <h1>Login Problems with LON-CAPA</h1>
16: <h2>Which browsers can I use with LON-CAPA?</h2>
17: LON-CAPA is designed to work with the following browsers
18: <ul>
19: <li>Mozilla version 1.0 and higher</li>
20: <li>Netscape version 4.7 and higher</li>
21: <li>Safari</li>
22: <li>Internet Explorer version 5.0 and higher</li>
23: </ul>
24: on the following operating systems
25: <ul>
26: <li>Linux</li>
27: <li>UNIX</li>
28: <li>MacOS</li>
29: <li>Windows 98, NT, 2000, ME, and XP</li>
30: </ul>
31: If you have problems logging in with any browser or any operating system not
32: listed above, please <b>use another browser or computer.</b>
33: <h2>I have accessibility needs</h2>
34: Please use the
35: <a href="/adm/login?interface=textual">alternative text-based login mode</a>.
36: Please let the system administrator know if you have any problems.
37: <h2>I would like to use my Pocket Computer or PDA to access LON-CAPA</h2>
38: While we can make no guarantees that LON-CAPA will work with your particular
39: Pocket Computer or PDA, you might want to try the
40: <a href="/adm/login?interface=textual">alternative text-based login mode</a>.
41: <h2>I get "Username and/or password could not be authenticated"</h2>
42: <ul>
43: <li>
44: The most common problem here is that the Caps-Lock button is pressed. Usernames
45: and passwords are case sensitive, so it does matter if something is typed with
46: lowercase or with uppercase letters.
47: </li><li>
48: The second most common problems is that users accidentally go to the wrong
49: server. LON-CAPA is running at many universities, colleges, and schools.
50: Especially if you hit upon this page by looking for "LON-CAPA" in Google or
51: some other search engine, you might have hit a server at another place. Please
52: make sure to use the URL provided to you.
53: </li></ul>
54: <h2>I get a list of computers ...</h2>
55: This means that the server you attempted to login to is currently not
56: available. For example, it might be undergoing maintenance. Please click on
57: any of the other server, giving preference to the ones that say "preferred."
58: <h2>I get "Login token missing, inaccessible or expired"</h2>
59: This is a very rare problem. If it occurs, please wait for 20 minutes, reload
60: the login page, and try again. If after 20 minutes LON-CAPA still gives you
61: the same message, please email the Server Administrator listed on the login
62: page. The Server Administrator can verify your situation and re-enable logins.
63: <h2>I hit "Log In," but nothing happens, or I get error messages and
64: warnings</h2>
65: <ul>
66: <li>The most common problem is that your browser is not one of the browsers
67: listed above.</li>
68: <li>You might have modified the preferences in your browser. In particular, the
69: following preferences can be a problem:
70: <ul>
71: <li>Scripting languages, in particular JavaScript, is disabled.
72: <i>Test: as you <a href="javascript:alert('PASSED TEST');">click here</a>,
73: a small window should appear. If no window appears, scripting is disabled.</i>
74: </li>
75: <li>The security settings are cranked up to a higher level. In particular, this
76: might prevent unencrypted submission of passwords (LON-CAPA actually does its
77: own encryption), or cross-server submission of forms.
78: </ul></li>
79: <li>If all else fails, please <b>try from another computer.</b></li>
80: </ul>
81: <h2>After logging in, I get the message "Welcome," but then nothing happens
82: </h2>
83: <ul>
84: <li>The most common problem is that your browser is not one of the browsers
85: listed above.</li>
86: <li>If you have a supported browser, it might be hung.
87: <b>Please completely quit
88: your browser, and start it again.</b></li>
89: <li>You might have installed a filter against so-called "pop-up ads" (those
90: obnoxious windows that come up into your face trying to sell you something
91: while you are surfing). These filters will prevent LON-CAPA from running
92: properly. Please disable the filter for your school's domain, for example
93: "<tt>xyzu.edu</tt>."
94: <i>Test: as you <a href="javascript:openwin();">click here</a>,
95: a small window should appear.
96: If no window appears there, but
97: <a href="javascript:alert('THIS COMES UP');">this window</a> does come up,
98: pop-up filters are active.</i></li>
99: <li>You might be getting your internet access from a free service provider
100: which adds banner ads to your pages. These ads conflict with LON-CAPA, you
101: will need to use another provider.</li>
102: <li>If you do not want to re-adjust the preferences of your browser, you might
103: want to use the
104: <a href="/adm/login?interface=textual">text-based login mode</a>.
105: <li>If all else fails, please <b>try from another computer.</b></li>
106: </ul>
107: </body>
108: </html>
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