--- sourceDocument: Yokohama Release Notes sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/release-notes Release : - yokohama ft:locale : - en-US ft:publication_title : - Yokohama Release Notes ft:clusterId : - rn bundleId : - rn --- # Yokohama Patch 8 Hotfix 1 # Yokohama Patch 8 Hotfix 1 {#ariaid-title1} Release version: Yokohama Updated October 29, 2025 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of Yokohama Patch 8 Hotfix 1 The Yokohama Patch 8 Hotfix 1, released on October 29, 2025, addresses several issues identified in previous versions. This hotfix is critical for optimizing performance and resolving concurrency problems in ServiceNow instances. Show full answer Show less ## Key Features * **Build Information:** * Build date: October 26, 2025 * Build tag: glide-yokohama-12-18-2024patch8-hotfix1-10-15-2025 * **Fixed Problems:** * **Access Control:** Optimized performance related to archive tables (PRB1893600). * **Activity Stream:** Resolved a Concurrent Modification Exception by replacing HashMap with ConcurrentHashMap (PRB1928872). * **Event Management:** Fixed issues with alerts on Application Services displaying incorrect PRCs (PRB1639714). * **Upgrade Information:** Customers can safely upgrade from any prior version listed, including Yokohama Patch 1 through 8, which contain relevant PRB fixes. ## Key Outcomes By applying this hotfix, ServiceNow customers can expect improved performance, enhanced stability, and corrected alert functionalities within their applications. It is important to review the detailed steps for reproducing issues and ensure a smooth upgrade process. The Yokohama Patch 8 Hotfix 1 release contains fixes to these problems. Build information: : Build date: 10-26-2025_2315 : Build tag: glide-yokohama-12-18-2024__patch8-hotfix1-10-15-2025 Important: For more information about how to upgrade an instance, see [ServiceNow upgrades](https://servicenow-prod.fluidtopics.net/gT4zpGHCQSL790audteXjw "The upgrade process moves your instance to a new ServiceNow release version. Understand the difference between upgrading and patching, release definitions, rollback and backup options, and how to test your non-production and production instance upgrades."). For more information about the release cycle, see the [ServiceNow Release Cycle](https://support.servicenow.com/kb_view.do?sysparm_article=KB0547244).{#yokohama-patch-8-hf-1-PO__p_download-version} Note: This ServiceNow AI Platform major family release is now available in ServiceNow's Regulated Market environments. For more information about services available in isolated environments, see [KB0743854](https://support.servicenow.com/kb_view.do?sysparm_article=KB0743854). ## Fixed problem {#yokohama-patch-8-hf-1-PO__section_czm_xfx_zgc} {#yokohama-patch-8-hf-1-PO__all-other-fixes__entry__4} | Problem | Short description | Description | Steps to reproduce | |-|-|-|-| | Access Control PRB1893600 [KB2178333](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2178333) | RecordFamilyResolver. archiveTable HasACLTerms needs more optimization | Performance issues with reports on customer instances with a big number of archive tables. | Refer to the listed KB article for details. | | Activity Stream PRB1928872 | The CanReadRepo class encounters a Concurrent Modification Exception | This concurrency issue arises because the class uses a HashMap, which is not thread-safe. The HashMap should be replaced with a ConcurrentHashMap to ensure thread-safe operations and prevent the exception. | | | Event Management PRB1639714 | Alerts on an Application Service have empty PRCs | Alerts on an Application Service appear in the list of 'Impacted Services/CIs' of some change request. These alerts have empty PRCs and they have only one change request instead of two. | 1. Define the Manual Application Service. 2. Define the Change Request for the Application Service. 3. Send the event to some CI of the Application Service. 4. Open the generated alert. 5. Navigate to the PRC. * Observe that the alert has the PRC 'Change on Application Service.' {#yokohama-patch-8-hf-1-PO__ul_c2k_j4p_lgc} 6. Send the event to the Application Service. 7. Open the generated alert. 8. Navigate to the PRC. * Observe that the alert has the PRC 'Change on Application Service.' {#yokohama-patch-8-hf-1-PO__ul_jnz_m4p_lgc} 9. Create another change request on a different CI. 10. Add the defined Application Service to the list of Impacted CIs of the change request. 11. Send the event to the Application Service. 12. Open the generated alert. 13. Navigate to the PRC. {#yokohama-patch-8-hf-1-PO__ol_ntl_d4p_lgc} Observe that the alert has only one change request, but it should have two. | [ ] {#yokohama-patch-8-hf-1-PO__all-other-fixes} ## Fixes included {#yokohama-patch-8-hf-1-PO__section_dzm_xfx_zgc} Unless any exceptions are noted, you can safely upgrade to this release version from any of the versions listed below. These prior versions contain PRB fixes that are also included with this release. Be sure to upgrade to the latest listed patch that includes all of the PRB fixes you are interested in. * [Yokohama Patch 8](https://servicenow-prod.fluidtopics.net/d6f5kXcWfwp1HgaFexLdIA "The Yokohama Patch 8 release contains important problem fixes.") * [Yokohama Patch 7](https://servicenow-prod.fluidtopics.net/Gs2iWPbHpHMxHq8yOoBAsQ "The Yokohama Patch 7 release contains important problem fixes.") * [Yokohama Patch 6](https://servicenow-prod.fluidtopics.net/BNjEZmwQIcYFm~7CXtuiIA "The Yokohama Patch 6 release contains important problem fixes.") * [Yokohama Patch 5](https://servicenow-prod.fluidtopics.net/Aff4QuTPpkrqeTYFQvvOuw "The Yokohama Patch 5 release contains important problem fixes.") * [Yokohama Patch 4](https://servicenow-prod.fluidtopics.net/0NZMP7lTOVEOXCW5pwnSdQ "The Yokohama Patch 4 release contains important problem fixes.") * [Yokohama Patch 3](https://servicenow-prod.fluidtopics.net/jXrkPnnmOuaGleV7JYQPtA "The Yokohama Patch 3 release contains important problem fixes.") * [Yokohama Patch 2](https://servicenow-prod.fluidtopics.net/gTw0R2nzVMQBcbdPC0soDw "The Yokohama Patch 2 release contains important problem fixes.") * [Yokohama Patch 1](https://servicenow-prod.fluidtopics.net/HPuS6cI3Q9FclhqSglkLPQ "The Yokohama Patch 1 release contains important problem fixes.") * [Yokohama security and notable fixes](https://servicenow-prod.fluidtopics.net/zY12c3el4NQneYtiA4kD1A "The Yokohama release contains important problem fixes.") * [All other Yokohama fixes](https://servicenow-prod.fluidtopics.net/xk4JxNj~_l2ZYEt921KFzA "The Yokohama release contains important problem fixes.") {#yokohama-patch-8-hf-1-PO__ul_j2p_ypq_lfc}