Formstack Sign Security Update and Browser Requirements

Update timeline

1. identified Feb 05, 2026, 09:35 PM UTC

   Formstack Sign recently implemented a security upgrade. As a result, users on older or unsupported browsers may experience issues loading documents in Sign. To avoid potential degradation, please ensure your operating system and browser are updated to a supported, recent version. Supported browser versions: • Chrome 119 or later • Edge 119 or later • Safari 17.4 or later • Firefox 121 or later This issue does not impact any other Formstack products and is specific to Formstack Sign. We are actively investigating options to mitigate this limitation and will provide updates as they become available. We apologize for any inconvenience this may cause.

2. identified Feb 06, 2026, 03:18 PM UTC

   A fix has been identified and is expected to be deployed within the next few hours. In the meantime, updating to a supported, recent browser and operating system remains the recommended workaround to avoid potential issues loading documents in Formstack Sign.

3. monitoring Feb 06, 2026, 04:34 PM UTC

   A fix has been implemented and we are monitoring the results.

4. resolved Feb 06, 2026, 07:10 PM UTC

   This incident has been resolved.