Azure status

Note: During this incident, as a result of a delay in determining exactly which customer subscriptions were impacted, we chose to communicate via the azure status Azure Status page.

Note: During this incident, as a result of a delay in determining exactly which customer subscriptions were impacted, we chose to communicate via the public Azure Status page. As described in our documentation, public PIR postings on this page are reserved for 'scenario 1' incidents - typically broadly impacting incidents across entire zones or regions, or even multiple zones or regions. Summary of Impact: Between and UTC on 07 Feb first occurrence , customers attempting to view their resources through the Azure Portal may have experienced latency and delays. Subsequently, impact was experienced between and UTC on 08 Feb second occurrence , the issue re-occurred with impact experienced in customer locations across Europe leveraging Azure services. Preliminary Root Cause: External reports alerted us to higher-than-expected latency and delays in the Azure Portal.

Azure status

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Customer impact started to subside and ARG calls were successfully passing updated resource information. ARM nodes restart periodically by design, to account for automated recovery from transient changes in the underlying platform, and to protect against accidental resource exhaustion such as memory leaks, azure status. Preliminary Root Cause: External reports alerted us to higher-than-expected azure status and delays in the Azure Portal.

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The Hybrid Connection Debug utility is provided to perform captures and troubleshooting of issues with the Hybrid Connection Manager. This utility acts as a mini-Hybrid Connection Manager and must be used instead of the existing Hybrid Connection Manager you have installed on your client. If you have production environments that use Hybrid Connections, you should create a new Hybrid Connection that only gets served by this utility and repro your issue with the new Hybrid Connection. The tool can be downloaded here: Hybrid Connection Debug Utility. Typically, for any troubleshooting of Hybrid Connections issues, Listener should be the only mode that is necessary.

Azure status

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Azure offers a suite of experiences to keep you informed about the health of your cloud resources. This information includes current and upcoming issues such as service impacting events, planned maintenance, and other changes that may affect your availability. Azure status informs you of service outages in Azure on the Azure Status page. The page is a global view of the health of all Azure services across all Azure regions. The status page is a good reference for incidents with widespread impact, but we strongly recommend that current Azure users leverage Azure service health to stay informed about Azure incidents and maintenance. Service health provides a personalized view of the health of the Azure services and regions you're using. This is the best place to look for service impacting communications about outages, planned maintenance activities, and other health advisories because the authenticated Service Health experience knows which services and resources you currently use. The best way to use Service Health is to set up Service Health alerts to notify you via your preferred communication channels when service issues, planned maintenance, or other changes may affect the Azure services and regions you use. Resource health provides information about the health of your individual cloud resources such as a specific virtual machine instance.

Scrap synonyms in english

During this incident, these services were unable to retrieve updated RBAC information and once the cached data expired these services failed, rejecting incoming requests in the absence of up-to-date access policies. While impact for the first occurrence was focused on West Europe, the second occurrence was reported across European regions including West Europe. From November 20, , this included RCAs for all issues about which we communicated publicly. Mitigation: During the first occurrence, we initially suspected an issue with Azure Resource Graph ARG and reverted a recent deployment as this was a potential root cause. What went wrong and why? Customer impact started to subside and ARG calls were successfully passing updated resource information. After further investigation, we determined that an issue impacting the Azure Resource Manager ARM service resulted in downstream impact for various Azure services. Our ARM team have already disabled the preview feature through a configuration update. How did we respond? Eventually this led to an overwhelming of the remaining ARM nodes, which created a negative feedback loop increased load resulted in increased timeouts, leading to increased retries and a corresponding further increase in load and led to a rapid drop in availability. Estimated completion: February Our ARM team will audit dependencies in role startup logic to de-risk scenarios like this one. The vast majority of downstream Azure services recovered shortly thereafter.

Impact Statement: Starting as early as UTC on 07 Feb , customers accessing their resources through the Azure Portal may experience latency and delays viewing their resources. Impact would be mostly seen in West Europe.

How did we respond? Automated communications to a subset of impacted customers began shortly thereafter and, as impact to additional regions became better understood, we decided to communicate publicly via the Azure Status page. Status History. Next Steps: We continue investigating to identify all contributing factors for these occurrences. Estimated completion: February Finally, our Key Vault team are adding better fault injection tests and detection logic for RBAC downstream dependencies. Completed We are gradually rolling out a change to proceed with node restart when a tenant-specific call fails. This triggered the latent code defect and caused ARM nodes, which are designed to restart periodically, to fail repeatedly upon startup. Estimated completion: February We are improving monitoring signals on role crashes for reduced time spent on identifying the cause s , and for earlier detection of availability impact. Subsequently, impact was experienced between and UTC on 08 Feb second occurrence , the issue re-occurred with impact experienced in customer locations across Europe leveraging Azure services. This feature is to support continuous access evaluation for ARM, and was only enabled for a small set of tenants and private preview customers. How can we make our incident communications more useful? Note: During this incident, as a result of a delay in determining exactly which customer subscriptions were impacted, we chose to communicate via the public Azure Status page. From June 1, , this includes RCAs for broad issues as described in our documentation. Completed Our Key Vault team has fixed the code that resulted in applications crashing when they were unable to refresh their RBAC caches. Estimated completion: February Our Container Registry team are building a solution to detect and auto-fix stale network connections, to recover more quickly from incidents like this one.