Error with JavaScript invoker after edge update 150.0.4078.48

tommar — Wed, 08 Jul 2026 11:14:15 GMT

Hello, we are currently getting an Error with one of are Edge browser process's when it tries to invoke JavaScript. We are getting the error:

ERROR: Internal : Failed to perform step 2 in Navigate Stage 'Inject and run cookie javascript' on page 'Login' - JavaScript invoker returned the following error message: Attempted to Invoke JavaScript without Web Driver

The Web Driver, and Edge version appear to be the same version (150).

The navigation stage throwing the error itself is made up of 2 parts.

The first action is a insert JavaScript function which sets up the script we run, the second stage is a invoke JavaScript function which executes the function set in stage 1 (the script is stored in the data item [JS-MODSESSION]). They both run against the root of the website.

The Script it uses is the following (for context this script is used to grab the current session token, so we can use the website's API to carry some tasks where the website interface itself is unsuitable for spying):

function createAndPopulateMODSESSIONTextBox() { // 1. Get the MODSESSION value const modSessionValue = document.cookie; // 2. Create the text box element const modSessionTextBox = document.createElement('input'); // 3. Set attributes for the text box modSessionTextBox.type = 'text'; modSessionTextBox.id = 'MODSESSION'; // Assign an ID for easy reference modSessionTextBox.readOnly = true; // Make it read-only if you just want to display the value modSessionTextBox.value = modSessionValue; // Set the retrieved value const label = document.createElement('label'); label.htmlFor = 'MODSESSION'; label.textContent = 'MODSESSION: '; document.body.appendChild(label); document.body.appendChild(modSessionTextBox); }

Any help would be appreciated.

Re: Error with JavaScript invoker after edge update 150.0.4078.48

greggoodrem — Wed, 08 Jul 2026 21:14:12 GMT

There have been historic problems with Invoke Javascript on different versions of Blue Prism what version are you using this may be a factor to check.

There is a new function in the navigate stage called 'Invoke Javascript Event' which might work better? It seems to require less code than the traditional route. Check out the link to an article which might apply to you.
https://support.blueprism.com/en/support/solutions/articles/7000078862

Hope this helps but more detail on some of the things in the table would hopefully get you closer to a working solution.

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Error with JavaScript invoker after edge update 150.0.4078.48

Re: Error with JavaScript invoker after edge update 150.0.4078.48