Adding here for anyone else who might encounter this issue. I spoke to Docusign Support who advised this was caused by a Salesforce update.

To resolve the issue, Docusign provided a later version of DAL (I was using 6.7.0, upgraded to 7.9.2). I upgraded it in my sandbox, and after disconnecting and reconnecting, it worked as expected.

Hello, Mollyh,

I have the same issue. ¿Do you now how can I upgrade Docusign App Launcher to 7.9.2? In Appexchange I see the newest version is 7.8.0

Thank you

Hi, it was the link provided to me by DS Support - if upgrading to 7.8.0 does not resolve your issue I would raise a case with Docusign to confirm. 😊

Hey ​@mollyh,

Welcome to the Docusign Community— great to have you here!

We're delighted that things are working now. Your solution is a valuable addition to our community, thank you for sharing  😊

Favor, could you please mark your answer as "Best Answer" ✅, to help other community members find trusted answers and follow similar steps. 

If anything else comes up or you hit another roadblock, don’t hesitate to reach out here in the Community.

Wishing you a smooth rest of your day!

Sincerely,

Melanie | Docusign Community Moderator

This error was caused by Winter 26 release, which deployed this weekend in Sandboxes.

To prevent this error from occurring in Production when the release is deployed (the Winter '26 Major Release deploys in October), can I install DAL version 7.9.2 in Production now or do I have to wait for the release to be released?
 

Hi ​@Pedraligan,

Thanks for posting your question! For other community members visibility, sharing the recap of the issue and suggested solution:

A consequential impact has been observed on the Docusign Apps launcher where Sandboxes or demo account with DAL were disrupted due to Salesforce's most recent update - Salesforce Winter 26 upgrade deployment in the Sandboxes environment.

The fix is to update Docusign Apps Launcher using the following update link. Important Note: After clicking the link, you will be directed to a login screen. Please replace the login with the test in the URL to ensure you are logged into the Sandbox environment for the update 👉 https://login.salesforce.com/packaging/installPackage.apexp?p0=04tKg0000004eWr

Please be advised that the Winter 26 deployment will start in production, but right now, the instruction internally is to update by the 20th of September 2025.

Reminder for those on lower versions of DAL (below 6.0), please make sure to upgrade the DAL version. Comprehensive guide here 👉 how to upgrade DAL

To know exactly when the upgrade will be enforced in your Production organization, please see the steps below:

1. Log in to Salesforce.

2. Go to Setup → Company Information to see your instance name (e.g., NA34, EMEA17).

3. Visit  https://status.salesforce.com/current/maintenances

4. Enter your instance id and locate your instance under the Maintenance tab to find your scheduled Winter ’26 release date.

Let us know if you have questions— we're here for you!

Sincerely,

Melanie | Docusign Community Moderator
If this helped clarify things, feel free to Like👍and click "Best Answer"