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

Last Modified: May 14, 2024

Affected Product(s):
BIG-IP All(all modules)

Known Affected Versions:
14.1.4,,,,,,, 14.1.5,,,,,,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 15.1.9,, 15.1.10,,,,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,,, 16.1.4,,,, 17.0.0,,, 17.1.0,,,, 17.1.1,,,

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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips