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Troubleshooting Electronic Resources: A guide for Patrons: 400 Bad Request Error

Guide for trouble shooting directions for known electronic resources issues.

Try an alternate browser

Example of a Bad Request error

 

Google Chrome is particularly prone to 400 Bad Request errors. You might consider opening the resource in an incognito window or using an alternative browser such as Mozilla Firefox or Microsoft Edge.

Directions - Clearing Cookies for lib.torontomu.ca and torontomu.ca

You can try to resolve the issue is by clearing cookies that might be causing this problem. The following are directions to clearing just the cookies that originate from lib.torontomu.ca and torontomu.ca . All your other saved passwords and cache will not be affected. Please follow the directions below closely. 

Locate site settings for Chrome.

Directions for PC

Directions for Mac:

  • From Menu on the top left of browser, next to the apple icon, click on Chrome and then Preferences.
  • Scroll until you see Advanced, click on that to expand more options.
  • Under Privacy and security, click on Site Settings

Locate and delete the lib.torontomu.ca Cookies

One of the options under site settings is Content> Cookies and site dataCookies options list with the option Cookies and site data circled

Once in that menu, you will look for See all site data and permissions.

Screenshot with "See all site data and permissions" circled

We will search for the cookies we want. Type in lib.torontomu.ca into the search bar on the top right.

Screenshot with search bar in top right of page with the text lib.toronto.my circled

View what the cookie looks like circled below

A screenshot with the cookie torontomu.ca circled

Click on the garbage can icon beside lib.torontomu.ca to delete the cookies.

Screenshot with the cookie torontomu.ca cookie at the top of the page with a list of related cookies below. An arrow points to a trash can beside the torontomu.ca cooki

Try to access resource again.

Once you have cleared the cookies, you can try to access the resource again. If this has fixed the problem, you should be able to get to the site now. If this doesn't fix the problem, please contact erm@torontomu.ca