Microsoft is investigating an Outlook bug inflicting desktop app crashes, excessive system useful resource utilization, and stopping customers from logging into their accounts.
Whereas the corporate stated these ongoing points solely have an effect on European prospects, customers worldwide have since reported experiencing the identical sign-in and app instability issues.
“We’re investigating a difficulty through which customers in Europe could also be experiencing crashing, not receiving emails or observing excessive reminiscence utilization when utilizing the Outlook shopper,” the corporate stated.
“We’re analyzing information from prospects experiencing crashes and excessive reminiscence utilization when utilizing the New Outlook desktop app. We’re reviewing service telemetry and reproducing the problem internally to develop a mitigation plan.”
In response to some reviews, the identical issues additionally affect Outlook on the internet (OWA), with the app freezing and not loading for some customers in the US and elsewhere.
Affected Outlook (new) prospects have additionally seen the app displaying alerts that advise them to restart the system due to excessive reminiscence consumption.
In an incident report added to the admin heart (tracked as MO907654), the corporate additionally stated that these ongoing points could also be blocking customers from logging into different Microsoft 365 providers.
“Have been analyzing service telemetry, particularly networking information and authentication particular to the Netherlands, and additional investigating potential affect to different Microsoft 365 providers,” Redmond stated.
The corporate additionally tweeted by way of its official Microsoft 365 Standing Twitter account that it recognized a possible reminiscence administration challenge that could be accountable for this outage.
“We’re acquiring reminiscence dumps and logs from Outlook shopper telemetry information for evaluation to find out our subsequent steps,” it stated.
In August, Microsoft mitigated an Azure outage that took down a number of providers for patrons throughout North and Latin America for greater than two hours.
Replace October 11, 07:29 EDT: 5 hours into the outage, Microsoft utilized a configuration change and stated telemetry information confirmed that it fastened the Outlook points.
“After prolonged monitoring and addressing lingering affect, we have declared the incident mitigated,” Microsoft stated on X (previously Twitter).
“If customers are nonetheless experiencing affect, please refresh/restart your Outlook periods. Additional particulars will be discovered inside the admin heart underneath MO907654.”