Bug ID 1035661: REST Requests return 401 Unauthorized when using Basic Auth

Last Modified: Sep 23, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4, 16.0.0,, 16.0.1,,

Opened: Jul 22, 2021
Severity: 3-Major


REST Requests are intermittently failing with a 401 error. The restjavad-audit.*.log shows these requests are closely preceded by a 503 response from /mgmt/tm/auth/source.


REST requests will fail with a misleading response code and for no readily apparent reason.


Triggered when a REST request comes in using Basic Auth while an asynchronous task is executing on the BIG-IP. An example of an asynchronous task is the BIG-IP processing an AS3 declaration.


Use token based authentication for REST requests.

Fix Information


Behavior Change