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Shoaib IqbalShoaib Iqbal 

Streaming API Handshake Failure

I am always getting the following message from Streaming API workbench (

{  "channel": "/meta/handshake",   "advice": {    "reconnect": "handshake"  },   "error": "403::Server is too busy. Please try your request again later.",   "successful": false,   "id": "4",   "action": "handshake"}

Is there anyone from Support that can check this.
I think you have not Streaming API permission. Here are some Prerequisites:

Please check if it does not work please let me know.
403 means request has reached to Salesforce and salesforce is able to understood the request, but refuses to take any further action. 
Shoaib IqbalShoaib Iqbal
I have the proper permission. We received this error from between 11 June to 13 June. After 13 June, without any change in our org it start working again.