Bug ID 870349: Continuous restart of ntlmconnpool after license reinstall

Last Modified: Apr 28, 2023

Affected Product(s):
BIG-IP Install/Upgrade, LTM(all modules)

Known Affected Versions:
15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6,, 15.1.7, 15.1.8,,, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3,,,,

Opened: Jan 17, 2020

Severity: 3-Major


The ntlmconnpool process continuously restarts after reinstalling the licence. The system reports a message in the BIG-IP console: Re-starting ntlmconnpool.


System requires reboot, and reports 'Re-starting ntlmconnpool' message continuously in the BIG-IP console.


This occurs when you upgrade your license such that the new license changes the number of TMMs available.


You must reboot to clear the condition. Once the system comes back up, it operates as expected.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips