Bug ID 435482: UCS containing filenames with spaces cannot be rolled forward from pre-11.4.0 to 11.4.0 or later.

Last Modified: Oct 16, 2023

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

Known Affected Versions:
11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6

Opened: Oct 27, 2013

Severity: 3-Major

Related Article: K15144


BIG-IP configuration object names that include a space may cause an upgrade or user configuration set (UCS) load to fail. As a result of this issue, you may encounter the following symptoms: Your attempts to upgrade the BIG-IP system or load a UCS fail. After loading a UCS file or upgrading from a configuration that has object names with spaces on BIG-IP 11.4.0 or a later version, the Configuration utility displays an error message similar to the following example: The configuration has not yet loaded. If this message persists, it may indicate a configuration problem. After loading a UCS file that has configuration object names that include spaces on BIG-IP 11.4.0 or a later version, a message appears similar to following example: Unexpected Error: Configuration cannot be saved unless mcpd is in the running phase. Save was canceled. See 'show sys mcp' and 'show sys service'. If 'show sys service' indicates that mcpd is in the run state, but 'show sys mcp' is not in phase running, issue the command 'load sys config' to further diagnose the problem.


The BIG-IP system upgrade or UCS load fails.


This issue occurs when one of the following conditions is met: You attempt to upgrade a BIG-IP system from 11.3.0, or an earlier version, with a configuration that has configuration object names with spaces. You attempt to load a BIG-IP 11.3.0 or earlier UCS file, that has configuration object names with spaces, on BIG-IP 11.4.0 or a later version.


To work around this issue, you can boot back to the previous BIG-IP 11.3.0 or earlier version and rename all affected configuration objects to exclude spaces before upgrading or saving a UCS file. Impact of workaround: Performing the suggested workaround should not have a negative impact on your system.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips