Why do I get "Failed to reload configuration: unstable environment: Found one or more servers with different version Config Reload denied." Error?

Why do I get "Failed to reload configuration: unstable environment: Found one or more servers with different version Config Reload denied." Error?
AuthorFullName__c
JFrog Support
articleNumber
000001084
ft:sourceType
Salesforce
FirstPublishedDate
2016-09-05T14:54:22Z
lastModifiedDate
2023-02-26T19:37:29Z
VersionNumber
4

ISSUE: An Artifactory configuration change (e.g. create new repository) fails with the following error.

[ERROR] (o.a.c.CentralConfigServiceImpl:308) - Failed to reload configuration: unstable environment: Found one or more servers with different version Config Reload denied.

java.lang.RuntimeException: unstable environment: Found one or more servers with different version Config Reload denied.


REASON:

This can occur when High Availability (HA) nodes have different versions of Artifactory
running. Therefore, to resolve this issue, make sure that all of your nodes are
running/upgraded to the same version (which will require a rolling restart).


RESOLUTION: 

To resolve the issue, all nodes need to be upgraded to the same version (requires a rolling restart). For more information, visit our documentation on "Upgrading Artifactory High Availability".