NewsWorld newsIn the newsLIVEUpdated 15 mins agoThe Microsoft Teams rival provides a platform to send messages to colleagues but users across the globe have reported problems with the application on Wednesday nightThe Slack messaging app is seen on a mobile phone screen (file image)(Image: Getty Images)Updated 00:23, 28 May 2026Work and communication platform Slack appears to be down as users across the globe report problems.Users in the UK, US and Australia reported problems with the platform a little before 11.30pm local time on Wednesday, May 28.One user wrote on real-time technology monitoring service Downdetector: "Currently getting 'Couldn't send message' when I attempt to attach a screenshot to a message in Slack. My colleagues are also having this issue."This is an ongoing story and updates will be provided.‌View PostView PostToday00:23 BSTSlack: 'Severe Latency Impacting All Slack Services'Slack has issued a statement saying: "Severe Latency Impacting All Slack Services".The services affected include incidents with:Login/SSOMessagingNotificationsSearchWorkspace/Org AdministrationCanvasesConnectivityFilesHuddlesApps/Integrations/APIsWorkflowsToday00:19 BSTSome Slack mobile platforms operatingSome Slack users in the US have reported problems with the webpage but not the mobile app.Others are reporting problems with both platforms.Today00:01 BST36 reports of issue made in UKAt least 36 reports of an issue with the platform had been made by UK-based users on Downdetector shortly before 11.45pm.27th May23:58 BSTUser says colleagues also having problems with platformOne users wrote on Downdetector:"Currently getting 'Couldn't send message' when I attempt to attach a screenshot to a message in Slack. My colleagues are also having this issue."27th May23:58 BSTUK, US and Australian users report problemsUsers in the UK, US and Australia reported problems with the platform a little before 11.30pm local time on Wednesday, May 28.27th May23:58 BSTSlack platform downWork and communication platform Slack appears to be down.Users across the globe have reported problems.‌