Inspiron or Vostro Cannot Connect to GlobalProtect VPN After Updating BIOS

Summary: Learn what to do if the GlobalProtect VPN cannot connect and shows a "connection failed" error after updating the BIOS on an Inspiron or Vostro computer.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

An affected Inspiron or Vostro may connect to a VPN using GlobalProtect after updating the BIOS. GlobalProtect shows a "connection failed" error instead of connecting.

Affected Platforms and Affected BIOS Versions:

  • Inspiron 15 3515 (BIOS version 1.35.0)
  • Inspiron 15 3525 (BIOS version 1.30.0)
  • Inspiron 3505 (BIOS version 1.34.0)
  • Vostro 15 3515 (BIOS version 1.35.0)
  • Vostro 3405 (BIOS version 1.34.0)
  • Vostro 3425 (BIOS version 1.30.0)
  • Vostro 3525 (BIOS version 1.30.0)

Cause

This issue is related to the BIOS code.

Resolution

Note: Before starting the update, perform the following:
  • Back up all personal data. For more information, refer to Back Up and Recovery.
  • Connect the AC adapter.

Updating the BIOS resolves the issue.

  • Inspiron 15 3515: Updating the BIOS to version 1.36.1 or later on the computer resolves the issue.
  • Inspiron 15 3525: Updating to BIOS version 1.31.1 or later on the computer resolves the issue.
  • Inspiron 3505: Updating to BIOS version 1.35.1 or later on the computer resolves the issue.
  • Vostro 15 3515 Updating to BIOS version 1.36.1 or later on the computer resolves the issue.
  • Vostro 3405 Updating to BIOS version 1.35.1 or later on the computer resolves the issue.
  • Vostro 3425 Updating to BIOS version 1.31.1 or later on the computer resolves the issue.
  • Vostro 3525 Updating to BIOS version 1.31.1 or later on the computer resolves the issue.

To download and install the BIOS, refer to the BIOS Update Guide.

Affected Products

Inspiron 3505, Inspiron 15 3515, Inspiron 15 3525, Vostro 3405, Vostro 3425, Vostro 15 3515, Vostro 3525
Article Properties
Article Number: 000395943
Article Type: Solution
Last Modified: 25 Nov 2025
Version:  1
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.