Amid an unprecedented number of individuals working from home, users are reporting that Microsoft Teams is struggling under the load.

Companies around the world are encouraging, and in some cases ordering, employees to work from home in an effort to slow down the coronavirus pandemic. The move has been a boon for cloud-based software and services, helping them achieve all new usage numbers.

It seems Microsoft Teams is struggling under the additional load, however. Tweets from users indicate some are experiencing problems with chat, while the application is barely usable for others. The company took to Twitter to let users know it was investigating the issue.

We’re investigating messaging-related functionality problems within Microsoft Teams. Please refer to TM206544 in your admin center for further details. ^JP

— Microsoft 365 Status (@MSFT365Status) 3/16/20

Microsoft has been trying to woo customers away from rival Slack for some time. If it hopes to continue, it will need to show it can scale under these circumstances.