Recover a deleted dashboard in the Azure portal
If you delete a published dashboard in the Azure portal, you can recover that dashboard within 7 days of the delete.
Follow these steps to recover a published dashboard:
From the Azure portal menu, select Resource groups, then select the resource group where you published the dashboard. (The default resource group is named dashboards.)
Under Activity log, expand the Delete Dashboard operation. Select the Change history tab, then select <deleted resource>.
Select and copy the contents of the left pane, then save to a text file with a .json file extension. The portal can use this JSON file to re-create the dashboard.
From the Azure portal menu, select Dashboards, then select Upload.
Select the JSON file you saved. The portal re-creates the dashboard with the same name and elements as the deleted dashboard.
Select Share to publish the dashboard and re-establish the appropriate access control.