The error message Sorry, we could not process your request. Invalid or missing state can occur when launching an LTI assignment in a new browser window with 3rd party cookies and/or JavaScript blocked. This can be resolved by editing your browser's enabled Privacy & Security preferences so that it will not block any background scripts that Turnitin is trying to load.
Please follow the steps below to ensure that your preferred browser reflects the correct preferences:
- In Safari, select Safari > Preferences > Security > Web content > Enable JavaScript
- In Firefox, select File > Preferences > Privacy & Security. If Strict is enabled, please change this to Standard.
- In Microsoft Edge, select Microsoft Edge > Preferences > Cookies and Site permissions > JavaScript > Allowed (recommended)
- In Google Chrome, select Settings (you can open the Settings page by clicking the icon with three stacked horizontal lines in your browser's menu bar) > Privacy & Security > Site Settings > Content > JavaScript > Please ensure that the option Sites can use JavaScript (recommended) is enabled.
If you would rather select Don't allow sites to use JavaScript and or 3rd party Cookies, please add api.turnitin.com / api.turnitinuk.com to the sites that are Allowed to use JavaScript / 3rd Party Cookies.
Once you have completed reviewing your browser's Privacy & Security preferences, please close your active browser and re-open a new browsing session so that any changes can take effect.