Microsoft is experiencing a significant global outage of its cloud and Office services.

“We are investigating reports of issues connecting to Microsoft services globally,” the company said.

The issue is not impacting all users, but just a large subset.

Along with Azure services and the Azure Portal, Microsoft 365 services and features, including Outlook, Word, and Excel, are affected.

"We have implemented networking configuration changes and have performed failovers to alternate networking paths to provide relief," Microsoft said in an update.

"Monitoring telemetry shows improvement in service availability, and we are continuing to monitor to ensure full recovery."

The outage comes less than two weeks after an Azure outage and a separate CrowdStrike-caused outage of millions of Windows systems.

The latter issue caused flights to be canceled, hospital appointments to be pushed back, and retailers to shut.