BugZero | F5 BugID 435670 - Recovery of persist.wellknownproxy by loading may ...

F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

Last updated on July 18th, 2026

BugZero Risk Score
6.7 Medium

Overall: 6.7

Severity: 7.3

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: TMOS

Description

Symptoms

If the DB variable Persist.WellKnownProxyClass names a deleted but loaded config item in Value List Object, the system posts an error.

Impact

The configuration file does not load, and the system posts an error similar to the following: Error 0x1020036 occurred: 01020036:3: The requested value_list (/Common/test_group) was not found.

Conditions

This occurs when the configuration item was removed from the running config, but exists inside a saved config.

Workaround

Load the UCS file a second time.

Fix Information

Persist.WellKnownProxyClass referencing missing object no longer fails with object-not-found error.

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.0 hf1, 11.6.0 hf2, 11.6.0 hf3, 11.6.0 hf4, 11.6.0 hf5, 11.6.0 hf6, 11.6.0 hf7, 11.6.0 hf8, 11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed versions: 12.0.0

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 12.0.0

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F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

F5 - Defect ID: 435670

Recovery of persist.wellknownproxy by loading may result in configuration error

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.7 Medium

BugZero Risk Score
6.7 Medium