If you are having trouble using Blackboard Learning System, there may be a problem with your browser or other software on your computer.
First, check and configure your browser using the Browser Tune-Up. Then, read the following tips and troubleshooting information.
Spyware and Deceptive Software| Top
Spyware, parasites, and other deceptive software can cause problems when using WebCT or other websites. Blackboard recommends that you check for, then uninstall or temporarily disable these types of software to eliminate problems when accessing Blackboard.
To check your browser for spyware, parasites, and other deceptive software and for more detailed information, visit the Doxdesk page on parasites: http://www.doxdesk.com/parasite
To help you control these types of Internet programs that could run on your computer, you can download and install a spyware detection and removal utility, such as:
For more information, see Microsoft's page about Spyware and Unwanted Software.
Try Using a Different Browser| Top
Most spyware and deceptive software affects only Internet Explorer. If you have many problems with Internet Explorer, using a different web browser may be a suitable workaround.
Depending on your version of Blackboard and your client operating system, other supported browsers include: Netscape, Mozilla, Firefox, and Safari.
View the list of browsers supported for your version of Blackboard.
Check Your Computer for Viruses | Top
Viruses can cause many problems with your computer. If your computer is infected with a virus, you may have trouble using WebCT.
Scan your computer to check for viruses. If you do not have a virus checker, it is strongly recommended that you get one and install it.
Microsoft Support maintains a list of antivirus-software vendors.
For more information about security:
Keep Your Microsoft Windows Software Updated | Top
If you are using Microsoft Windows operating system, to prevent malicious programs from taking advantage of known security holes, make sure you have the latest updates from Microsoft:
Sun Java Runtime Environment Errors | Top
Some users have reported problems using WebCT with Microsoft Windows and some versions of the Sun Java Runtime Environment (JRE).
Possible causes include using an incompatible version of Sun JRE or having multiple versions of Sun JREs installed. Some users have found that their problems are resolved after uninstalling all versions of Sun JRE from their computers, and then installing an earlier version, like Sun JRE 1.4.2_09.
After installing the JRE and rebooting your computer, do not download updates for the JRE. Disable automatic checking for Java updates:
Green screen and code like "); d.writeln(" "); | Top
When trying to access a course after logging into WebCT, some users have reported getting a green screen and code like "); d.writeln(" "); displaying in their browsers instead of the WebCT course.
It has been reported that this can be caused by the RX Bar (Search Engine Bar) that can be installed when you install peer-to-peer file sharing applications like Kazaa.
Users have found that this problem can be resolved by uninstalling the RX Bar.
HTTP 403 Forbidden or Access Denied Errors | Top
When trying to log into WebCT, some users have reported getting "403 Forbidden" or "Access Denied" error messages.
One possible cause is an Internet Explorer 6 update installed by Windows Update. Some users found that this problem could be resolved by changing an Internet Explorer setting:
If this problem persists after changing this setting and restarting your browser, it may be caused by spyware or deceptive software on your computer. Read more about spyware and WebCT.
Search Toolbars and Session Already Running Errors | Top
When trying to access WebCT Vista, some users have reported getting "Session Already Running" error messages.
Some users found that this problem could be resolved by changing an Internet Explorer setting:
Search toolbars may cause this problem. Users have reported that this problem could be resolved by uninstalling search toolbars from Yahoo!, mySearch, AltaVista, Google, and other sites.
You may be able to uninstall a toolbar through the Windows Control Panel:
For more information on uninstalling a program, refer to its documentation.
WebDAV and Folder is Invalid Errors | Top
When trying to access a folder in WebCT Vista using the WebDAV client in Microsoft Windows 2000 or XP, some users have reported getting an error message saying that the "folder is invalid".
This can be caused by some
Microsoft Windows WebDAV clients that encode the path that the
user enters, including changing the plus sign (
These WebDAV clients may have been updated
by installing Microsoft Office XP/2003. The original
WebDAV client that shipped with Windows 2000 and XP does not encode the
+) in the path, so it works with WebDAV paths in WebCT
Example of Path Encoding
The WebDAV path supplied to the user is:
However, the Windows WebDAV client encodes it to the following, which does not work:
In the WebDAV path, use spaces where the plus sign (+) was.
On the affected client computer, re-install the original WebDAV client for Microsoft Windows.
Workaround 2 based on:
"Error on Page" when attempting to add an attachment in WebCT Vista or CE 6 | Top
When trying to add an attachment to an assignment or discussion message in WebCT Vista or CE 6, some users have reported seeing an "Error on Page" message in their browser.
There are a number of possible causes for this error; most can be resolved by following WebCT's Browser Tune-Up instructions.
If you have already completed the Browser Tune-up, and you still experience this problem, the following suggestions from the Ask Dr. C forums may help:
For more information on these and other suggested solutions, please see the Ask Dr. C forum for students using WebCT Vista. You will find discussions about this issue in the following message threads, among others: