ACC Upgrade: Agent version is equal to (or higher than) ACC-F version; nothing to upgrade - When attempting a valid minor version upgrade e.g. 2.9.0 to 2.9.2 / 2.10.0 to 2.10.1DescriptionUpgrade to version x.y.z will fail if only the z minor version number is changing. This can be seen in the Agent Upgrade Histories related list of the Agent form: Upgrade stage: Instance verificationState: SkippedMessage: Agent version is equal to (or higher than) ACC-F version; nothing to upgradeUpgrade from version < Upgrade to Version This is most likely to be seen by customers who have already upgraded once and been subject to another known problem:PRB1598028 / Agent Client Collector Selective Upgrade does not upgrade to latest minor version - rounds down to x.y.0 (2.9.0 vs. 2.9.2 / 2.10.0 vs. 2.10.1)e.g. an upgrade from 2.9 to 2.10.1 will upgrade successfully but leave you on 2.10.0, and then when you click Upgrade Agent again, you will see this problem, and not be able to get to 2.10.1. If the "from" version is truly equal to or more than the "to" version, then this is expected behaviour. You cannot downgrade ACCs. See:KB1156997 Can the "Upgrade Agent" feature be used to Downgrade an Agent Client Collector (ACC)Steps to Reproduce Connect agent with version 2.9.0 to instanceInstall agent framework 2.9.2 on instanceGo to agent record and click Upgrade Agent linkInstance will block the upgrade with a message "Agent version is equal to (or higher than) ACC-F version; nothing to upgrade"WorkaroundThis problem is currently under review. You can contact ServiceNow Technical Support or subscribe to this Known Error article by clicking the Subscribe button at the top right of this article to be notified when more information becomes available. A workaround in Script Include AgentUpgradeAjax is possible, by changing line 123 from if (!AgentVersionFieldStyle.isAgentVersionLowerThanAccfVersion(agentVersion)) { to if (!AgentVersionFieldStyle.isAgentVersionLowerThanAccfVersion(agentVersion, true)) { Please import and commit this update set to make it easier to track and eventually revert the customisation:PRB1590846_sys_remote_update_set_0e3075231bed51100054fdd2cd4bcb0b.xmlRelated Problem: PRB1590846