{"meta":{"title":"Troubleshooting upgrades","intro":"Review common issues and solutions for issues that may impact the upgrade process, or may occur after an upgrade.","product":"Enterprise administrators","breadcrumbs":[{"href":"/en/enterprise-server@3.21/admin","title":"Enterprise administrators"},{"href":"/en/enterprise-server@3.21/admin/upgrading-your-instance","title":"Upgrade your instance"},{"href":"/en/enterprise-server@3.21/admin/upgrading-your-instance/troubleshooting-upgrades","title":"Troubleshoot an upgrade"}],"documentType":"subcategory"},"body":"# Troubleshooting upgrades\n\nReview common issues and solutions for issues that may impact the upgrade process, or may occur after an upgrade.\n\n## Links\n\n* [Restoring from a failed upgrade](/en/enterprise-server@3.21/admin/upgrading-your-instance/troubleshooting-upgrades/restoring-from-a-failed-upgrade)\n\n  Learn how to roll back from a failed upgrade.\n\n* [Known issues with upgrades to your instance](/en/enterprise-server@3.21/admin/upgrading-your-instance/troubleshooting-upgrades/known-issues-with-upgrades-to-your-instance)\n\n  See an overview of workarounds for issues that impact the upgrade process for GitHub Enterprise Server, or impact your instance after you complete an upgrade.\n\n* [Rotating the signing key for upgrade packages](/en/enterprise-server@3.21/admin/upgrading-your-instance/troubleshooting-upgrades/rotating-the-signing-key-for-upgrade-packages)\n\n  Learn how to rotate the GPG public key on GitHub Enterprise Server when GitHub updates the key used to sign upgrade packages."}