Troubleshooting upgrade issuesDescriptionThis article guides you through the process of troubleshooting an upgrade that is not starting or finishing properly. It provides steps to help you eliminate common causes for your problem by verifying that the configuration of your networking is correct. The latest upgrade documentation can be found here: ServiceNow Upgrades. Symptoms Symptoms may include the following: Upgrade did not startUpgrade schedule did not workUpgrade did not finishResolutionValidate that each troubleshooting step below is true for your environment. Each step provides instructions or a link to an article to eliminate possible causes and take corrective action as necessary. The steps are ordered in the most appropriate sequence to isolate the issue and identify the proper resolution. First, review the upgrade process. For more information, see ServiceNow Upgrades.If the upgrade does not start, follow the troubleshooting steps in KB0535198: Upgrade did not start.Determine if the upgrade was successful using the Upgrade Log. For more information, see KB0535200: Determining if the upgrade was successful using the Upgrade Log.Check the upgrade WAR properties. For more information, see KB0535199: Checking the Upgrade WAR properties. Note: If your problem still exists after trying the steps in this article, submit a case to our Support team and note this Knowledge Base article ID (KB0535172) in the description.