You receive a "Cannot connect to the Laserfiche Forms server" error when adding a Forms server to the Laserfiche Mobile 10.4.1 Configuration Page

October 12, 2020 | KB: 1014072
Laserfiche App 10.4.1

Summary

You may receive a "Cannot connect to the Laserfiche Forms server" error on the Laserfiche 10.4.1 Mobile Configuration Page when adding a Forms server to connect to in the Laserfiche Forms Server section.

Cause

Laserfiche Forms supports TLS 1.2 encryption. In order for Laserfiche Mobile to support this, the Laserfiche Mobile Server must be set to use .NET framework 4.7.2, which it does not by default.

Resolution

Update the Laserfiche Mobile Server web.config file.

  1. Navigate to C:\Program Files\Laserfiche\Mobile\Web Files.
  2. Open the web.config file in a text editor.
  3. Find the following line: compilation debug="false" targetFramework="4.5 and change it to: compilation debug="false" targetFramework="4.7.2
  4. Click Save to save your changes.