Microsoft outage disrupts businesses in Vietnam
On the morning of November 13, users across Vietnam reported problems with Microsoft services including Outlook, Teams and OneDrive, disrupting customer communication, file transfers and meeting schedules. Microsoft confirmed the outage and said it was testing other ways to restore service. Some institutions in Australia were also affected.
On the morning of November 13, users in several parts of Vietnam reported problems with Microsoft services including Outlook, Teams, OneDrive and SharePoint, affecting email, online meetings and file sharing. Microsoft confirmed the disruption. As of 10 a.m. that day, its efforts to improve the services had not achieved the expected results, and the company was testing other ways to restore access.
Microsoft Outlook remained inaccessible to users in Vietnam as of 11:29 a.m. on November 13.（VietVance）
Nhật Nam, a salesperson in Ho Chi Minh City, said Outlook failed to load his email, preventing him from sending a quotation to a customer as planned. He had to communicate by phone and other means. A marketing employee in Hanoi said her team had intermittent access to advertising plans and images stored on OneDrive. After switching to other platforms to transfer files, they also had to spend time checking versions.
An employee of a company providing digital transformation and information technology services said the outage prevented staff from accessing email and meeting schedules. Confidentiality requirements governing internal data also made it difficult for employees who rely on Copilot to process data and prepare reports to switch to other artificial intelligence tools. A programmer at a startup in Huế said the Teams outage interrupted discussions with overseas clients about software issues.
Internet service outage tracking platform Downdetector received hundreds of reports from users in Vietnam, including more than 200 concerning Outlook and about 130 concerning Microsoft 365. The accompanying image shows that some users in Vietnam still could not access Outlook as of 11:29 a.m. on November 13.
Downdetector showed that Microsoft services accounted for a large share of outage reports in Vietnam.（VietVance）
The outage also affected other markets. According to The Guardian, administrative processes were disrupted at some healthcare facilities in Australia. Some switched to paper prescriptions because their electronic prescribing systems required multifactor authentication through Microsoft email. U.S. electric truck manufacturer Workhorse Group said the widespread Microsoft service outage disrupted its operations, prompting it to postpone the release of its third-quarter 2026 results from November 12 to November 16.
Source: VietVance
