SharePoint or OneDrive Backup fails with 'Cannot complete this action'

This article has been updated to document the July 20, 2026, occurrence of this issue. Information regarding the February 2026 occurrence can be found in the More Information section at the very bottom of this article. Challenge A backup attempt for SharePoint Online and OneDrive objects may fail...

Upcoming improvements to Azure Data Factory and Azure Synapse Pipeline infrastructure in response to CVE-2022-29972

Executive Summary Microsoft recently mitigated and remediated a vulnerability affecting Azure Data Factory and Azure Synapse Pipelines. The vulnerability was found in the third-party ODBC data connector used to connect to Amazon Redshift, in Integration Runtime IR in Azure Synapse Pipelines, and...

Apache Log4j Remote Code Execution Vulnerability

Certain versions of Apache Log4j2 are vulnerable to a remote code execution vulnerability. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. Microsoft is not aware of any impact to th...

Coordinated disclosure of vulnerability in Azure Container Instances Service

Microsoft recently mitigated a vulnerability reported by a security researcher in the Azure Container Instances ACI. Our investigation surfaced no unauthorized access to customer data. Out of an abundance of caution we notified customers with containers running on the same clusters as the...

Coordinated disclosure of vulnerability in Azure Container Instances Service

Microsoft recently mitigated a vulnerability reported by a security researcher in the Azure Container Instances ACI that could potentially allow a user to access other customers’ information in the ACI service. Our investigation surfaced no unauthorized access to customer data. Out of an abundanc...

How A Simple Command Typo Took Down Amazon S3 and Big Chunk of the Internet

The major internet outage across the United States earlier this week was not due to any virus or malware or state-sponsored cyber attack, rather it was the result of a simple TYPO. Amazon on Thursday admitted that an incorrectly typed command during a routine debugging of the company's billing...