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Ashwin06127
Community Member
September 2, 2026
Question

Salesforce sandbox integration issue

Hi Calendly Support,

I’m having trouble connecting Calendly to my Salesforce sandbox org.

Here is what I’ve checked so far:

  • I have System Admin access in Salesforce.

  • The required Calendly permission sets are assigned to my user.

  • The Calendly package is installed (v2.6).

  • I tried connecting from an Incognito/private browser window, but it didn't help.

This issue started right after our sandbox was upgraded to the Salesforce Winter '27 release.

I’ve attached a screenshot of the error message for reference. Could you please take a look and advise on how to resolve this?

Thanks!

 

    6 replies

    Manojkrishnaks
    New Community Member
    September 20, 2026

    I have same issue, were you able to solve this?

    Senith
    New Community Member
    September 24, 2026

    Also, having this issue. We got passed it by spinning up another org from a clone of our current Salesforce Production that leveraged the older version of the Calendly package. This seemed to work, until today. 

    Jasmin_Tomahogh_DWGAdmin
    Community Member
    September 25, 2026

    We’re already having this problem today on all (5) Accounts connected via Integration to a Salesforce (Production) Org. No answer from support until yet.

    Brian66346
    New Community Member
    September 25, 2026

    I am having the same issue. This is business critical for us as we used Calendly for all of our bookings and we have several automations tied to it.

    David
    Community Manager
    David
    Community Manager
    September 25, 2026

    Hi all - If you haven’t already, I’d recommend reaching out to our support team on this.

    You can contact them via email at  support@calendly.com OR using our live chat function to speak to them directly.

    They’ll be able to look into your account and assist with the Salesforce connection from there.

     

    cc: ​@Senith , ​@Brian66346 

      Brian66346
      New Community Member
      September 25, 2026

      Thank you! I have reached out. It seems like this is a known issue related to Authorization and they are actively working with SF to resolve. 

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