Unable to authenticate to Blob containers in authorized storage account

Storage Explorer Version

1.43.0

Regression From

No response

Architecture

x64

Storage Explorer Build Number

20260407.6

Platform

Windows

OS Version

Windows 11

Bug Description

The following error message occurs when I try to view the blob containers in my storage account.

This request is not authorized to perform this operation.

This storage account's 'Firewalls & virtual networks' settings may be blocking access to storage services. Try adding your client IP address to the firewall exceptions, or by allowing access from 'all networks' instead of 'selected networks'. To learn more about Azure Storage firewalls and virtual networks, visit http://go.microsoft.com/fwlink/?LinkId=845443.

Error Details:
{
"name": "RestError",
"code": "AuthenticationFailed",
"statusCode": 403,
"details": {
"content-length": "438",
"content-type": "application/xml",
"date": "Thu, 14 May 2026 21:21:57 GMT",
"server": "Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0",
"x-ms-request-id": "cf8ec7a8-501e-0043-26e7-e31368000000",
"message": "Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.\nRequestId:cf8ec7a8-501e-0043-26e7-e31368000000\nTime:2026-05-14T21:21:58.1152545Z",
"code": "AuthenticationFailed",
"authenticationErrorDetail": "Authentication scheme Bearer is not supported in this version."
}
}

Resource Types

Blob

Authentication Method

Sign in

Connection Type

Sign in (subscription)

Steps to Reproduce

open storage explorer
expand server, then expand Storage accounts
then expand the target storage account
expand Blob Containers
error pop-up display

Actual Experience

i cannot get to my blob container to check to see if i uploaded a file

Expected Experience

i should be able to see and select my blob container

Additional Context

No response

Start by reproducing the failure in Azure Storage Explorer 1.43.0 on Windows 11 using the listed sign-in subscription flow, then trace the request made while expanding Blob Containers. Compare the authentication scheme in that request with the service response. Done means an authorized storage account can be expanded and its blob containers displayed without the 403 error.