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Each week, the CMS Hybrid Cloud program provides a list of upcoming changes, maintenance windows, and updates to help customers build awareness and plan effectively and summarizes changes from the previous week.
This newsletter includes:
Completed change summary for the week of 5/7/2026
- 5/8/2026 - Splunk GovCloud Upgrade
- 5/8/2026 - Enterprise Confluence Maintenance
- 5/9/2026 - Splunk DC ITSI Upgrade
- 5/10/2026 - Marketplace SSM Patching
To learn details about previous changes please go to the News and Updates section on cloud.cms.gov. (Secure Access required)
For Patching and Gold Image release schedule please view: Patching and Gold Image Release Calendar - 2026
5/16/2026 - Downscale Splunk Prod Indexers to 51.
Summary:
The Logging Services team will scale down Splunk indexers to 51 from 54.
Actions we are taking:
- Downscaling Splunk indexers using IAC
When is this happening?
Start Time: Saturday, 5/16/2026 at 8:00 am ET
End Time: Sunday, 5/17/2026 at 6:00 pm ET
Who will be impacted?
DRaaS ITSI, MITG MSI and EMM may have performance impacts when the Cloud Splunk indexers are being downscaled. Also, CCIC search heads peered to the Splunk environment might be impacted.
What is the impact?
There may be latency in adhoc searches that are performed by customers. Dashboards might also render slowly and have incomplete data while the changes are being propagated.
5/20/2026 - Non-marketplace SSM Patching - DEV/TEST/IMPL
Summary:
As part of our normal patching, the CMS Hybrid Cloud team will apply the latest Windows and Linux patches on Wednesday, 5/20/2026 at 6:00 p.m. ET. The week's patches will impact the DEV/TEST/IMPL environment for the affected Non-marketplace applications noted below.
Actions we are taking:
- Non-Marketplace DEV/TEST/IMPL
- SSM Linux & Windows Vulnerability Patching
When is this happening?
Start Time: Wednesday, 5/20/2026 at 6:00 PM. ET
End Time: Wednesday, 5/20/2026 at 11:00 p.m. ET
Who will be impacted?
CEDAR, Million Hearts, FFSDCS, RASS, OC Base- eLDAP, SC CLIA, NTP LMS, Spott MACBIS, OC Base- WNMG, NEIL/HRES, OC Base- EWST, MacFin, eAPD Hi-C, OC Base- CMS Cloud Legacy, OC Base- DevSecOps SecDevOps, iServ, MDP, PECOS2.0, SEI, OC Base- PWSS, TRA, CMS ARTS, MCIM, RAD Analysis Tools, MCIM, Perm, CMS Cloud - CRE, CMS Cloud - Enterprise Agile Tools, CMS Cloud tamer, CMS Cloud - CARD, CMS Cloud - ECS Fargate, CMS Cloud - Direct Connect, CMS Cloud - Jfrog SonarCube, CMS Cloud - DNS Prod, CMS Cloud - Governance 2.0, MEOWx, CMS Cloud - CloudBees Jenkins, CMS Cloud - CET, CMS Cloud - DevSecOps, CMS Cloud - Utilities, CMS Cloud - Testrail, CMS Cloud - CircleCI, CMS Cloud - Sam GSS Security GovCloud, SWIFT, AWS HEIDI, MDX, MSPSC, QMAC, ESS-TOOLS, QCOR
MEPBS, EACMS, MacPro, PS&R, RDS, OC Base- APIM GEO, 1115 PMDA, CMS Cloud - Governance 2.0, CMS Cloud - QuickDNS, CMS Cloud - CMSNet, CMS Cloud - CCG Web Content, CMS Cloud - Network Arch, CMS Cloud - VPC Automation, CMS Cloud - Security Team, CMS Cloud - CCG Web Content, CMS Cloud Temporal, CMS Cloud - Splunk, CMS Cloud - CET, AWS GSS Security GC, occonfluence, ocjira, miniorange, ocsonarqube, MTF-PM, NDW, MacFin, MTF-DM, PECOS-OM, NGD
What is the impact?
Patches will be applied to the affected areas and reboots where tags are applied
5/20/2026 - Marketplace SSM Patching - DEV/TEST
Summary:
As part of our normal patching, the CMS Hybrid Cloud team will apply the latest Windows and Linux patches on Wednesday, 5/20/2026 at 6:00 p.m. ET. The week's patches will impact the DEV/TEST environment for the affected Marketplace applications noted below.
Actions we are taking:
- Marketplace DEV/TEST
- SSM Linux & Windows Vulnerability Patching
When is this happening?
Start Time: Wednesday, 5/20/2026 at 6:00 p.m. ET
End Time: Wednesday, 5/20/2026 at 11:00 p.m. ET
Who will be impacted?
FFM_Opera, FFM_QAO, VAMS, TWS, XES - XOC Tools, SERVIS, FFM_Shared_Services, FFM MLMS, XES - MSI Tech Lab, FFM_FM, FFM_TWS, XES - Service Virtualization, CMS Cloud - Advanced Monitoring
DSRS, FFM, FFM DSH, FFM EDI, FFM EFT, FFM ESDCU, MCR, FLH, OC Base- FLH, OC Base PET, FFM_MNPS
What is the impact?
Patches will be applied to the affected areas, reboots may take places where tags are applied
5/20/2026 - MAG - Azure Update Manager Patching - DEV/TEST/IMPL
Summary:
As part of our normal patching, the CMS Hybrid Cloud team will apply the latest Windows and Linux patches on Wednesday, 5/20/2026 at 6:00 p.m. ET. The week's patches will impact the DEV/TEST/IMPL environment for the affected MAG applications noted below.
Actions we are taking:
- MAG DEV/TEST/IMPL
- MAG Linux & Windows Vulnerability Patching
When is this happening?
Start Time: Wednesday, 5/20/2026 at 6:00 p.m. ET
End Time: Wednesday, 5/20/2026 at 11:00 p.m. ET
Who will be impacted?
Subscription:
CMS.VDC-CCS.IUSG.SharedServices.001.AG
ScopeInfoTech-CM-HEDIS PLD-005
Resource Group with Reboot:
RG-SS-LDAP-PROXY-DEV
RG-SS-LDAP-PROXY-VAL
Resource Group with No Reboot:
RG-AZE-HEDISPLD-DEV
RG-AZE-HEDISPLD-VAL
What is the impact?
Patches will be transmitted to the affected areas. For some customers, reboots may occur depending upon the tags applied.
5/20/2026 - Azure Commercial - Azure Update Manager Patching - DEV/TEST/IMPL
Summary:
As part of our normal patching, the CMS Hybrid Cloud team will apply the latest Windows and Linux patches on Wednesday, 5/20/2026 at 6:00 p.m. ET. The week's patches will impact the DEV/TEST/IMPL environment for the affected Azure commercial applications noted below.
Actions we are taking:
- Azure Commercial DEV/TEST/IMPL
- Azure Commercial Linux & Windows Vulnerability Patching
When is this happening?
Start Time: Wednesday, 5/20/2026 at 6:00 p.m. ET
End Time: Wednesday, 5/20/2026 at 11:00 p.m. ET
Who will be impacted?
Subscription:
azure-comm-ea-cms-iusg-gss-patching-prod
azure-comm-ea-cms-iusg-gss-goldimage-prod
azure-comm-ea-cms-iusg-gss-smtp-nonprod
azure-comm-ea-cms-iusg-gss-smtp-prod
azure-comm-ea-cms-iusg-gss-vdi-nonprod
azure-comm-ea-cms-iusg-gss-vdi-prod
azure-comm-ea-cms-iusg-gss-securitycomp-prod
azure-comm-ea-cms-iusg-gss-logging-nonprod
azure-comm-ea-cms-iusg-gss-logging-prod
azure-comm-ea-cms-iusg-gss-nerdio-prod
azure-comm-ea-cms-iusg-gss-security-prod
azure-comm-ea-cms-iusg-gss-security-nonprod
azure-comm-ea-cms-iusg-gss-identity-prod
azure-comm-ea-cms-iusg-gss-securityauto-prod
azure-comm-ea-cms-iusg-gss-bigfix-prod
azure-comm-ea-cms-iusg-gss-connectivity-prod
azure-comm-ea-cms-iusg-gss-dataprotect-dev
azure-comm-ea-cms-iusg-gss-zscaler-prod
azure-comm-ea-cms-iusg-gss-dataprotect-prod
azure-comm-ea-cms-iusg-gss-dataprotect-test
azure-comm-ea-cms-iusg-gss-infoblox-prod
azure-comm-ea-cms-iusg-gss-c4testing1-dev
azure-comm-ea-cms-iusg-gss-ccgchatbot-dev
azure-comm-ea-cms-iusg-gss-ccgchatbot-test
azure-comm-ea-cms-iusg-gss-finops-prod
azure-comm-ea-cms-iusg-iam-workloads-prod
What is the impact?
Patches will be transmitted to the affected areas. For some customers, reboots may occur depending upon the tags applied.
Need help? We are here to support you.
If you have any questions, don't hesitate to reach out to your assigned Hosting Coordinator. CMS IT Support can be reached via cloudsupport@cms.hhs.gov, or call (800) 562-1963, and is documented here at Support Page on cloud.cms.gov.
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