Error 1016 can occur when there is a temporary issue affecting access to Microsoft Copilot.
Microsoft 365 Status has reported that an issue affecting access to Copilot on the web was investigated and mitigation actions were taken to restore access.
https://status.cloud.microsoft/
If you are still seeing the “This content is blocked” message, please try the following:
Close the Copilot page and open it again.
Sign out of your Microsoft account and sign back in.
Try accessing Copilot using an InPrivate/Incognito window.