Urgent: Authentication Issue in Pabbly Workflow Causing Lead Sync Failure Since 25 June

Status: Closed · Asked by Ram Ratan Mishra on · 0 views

Ram Ratan Mishra — Question ·
Hi Team,

We are facing an authentication-related issue in one of our Pabbly workflows, due to which leads are not being forwarded from Facebook Lead Ads to our CRM.

This issue has been occurring since 25th June, and because of this, a significant number of leads have failed to sync with our CRM.

Issue Details
Workflow: Facebook Lead Ads → Pabbly → CRM
Issue Started: 25th June
Impact: Leads are being successfully received by Pabbly from Facebook, but Pabbly is unable to forward them to the next step due to an authentication failure.
Error Message

"Error validating access token: The session has been invalidated because the user changed their password or Facebook has changed the session for security reasons."

From the workflow logs, we can see that:

Facebook Lead Ads trigger is receiving the lead successfully.
The workflow execution fails during the forwarding process.
The error is related to an OAuthException (Error Code: 190, Error Subcode: 460) indicating an invalid or expired Facebook access token.

For your reference, I have attached a screenshot of the workflow error.

We have already verified and corrected our lead forms, so the forms themselves are functioning correctly. The issue appears to be on the authentication/token validation side within the Pabbly workflow.

Could you please:

Investigate why this authentication issue started after 25th June 2026.
Let us know if the Facebook connection needs to be re-authorised or if there is any issue from Pabbly's end.
Help us restore the workflow so that leads are forwarded to our CRM without interruption.
Advise whether the failed executions since 25th June can be reprocessed after the issue is resolved.

This issue is affecting our lead flow and requires urgent attention. We would appreciate your prompt assistance.

Looking forward to your response.

Best regards,
Nitish Kumar
Screenshot 2026-07-13 at 7.22.22 PM.jpg
Pabbly Support — Reply ·

Hello Nitish,

Thank you for reaching out and for providing detailed information regarding the issue.

We have reviewed the error message and workflow logs you shared. The error indicates that the Facebook access token used in your Pabbly Connect workflow has either expired or been invalidated due to a password change or a security update from Facebook.

Here are the steps we recommend:

  1. Please re-authorize the Facebook Lead Ads connection in your Pabbly Connect account. This will generate a fresh access token and should resolve the authentication failure.

  2. Once re-authorized, test the workflow to confirm that leads are being forwarded successfully to your CRM.

  3. Unfortunately, the leads that are generated need to processed manually as the lead data is not received at Pabbly's end due to token expiration.

Please try the above steps and let us know if the issue persists.

Best regards, Team Pabbly Support

Thanks & Regards,

Adeel Akhtar
🌐 Pabbly.com

Ram Ratan Mishra — Reply ·

On Mon, Jul 13, 2026 at 9:18 PM Pabbly Support <[email hidden]> wrote:

Hello Nitish,

Thank you for reaching out and for providing detailed information regarding the issue.

We have reviewed the error message and workflow logs you shared. The error indicates that the Facebook access token used in your Pabbly Connect workflow has either expired or been invalidated due to a password change or a security update from Facebook.

Here are the steps we recommend:

  1. Please re-authorize the Facebook Lead Ads connection in your Pabbly Connect account. This will generate a fresh access token and should resolve the authentication failure.

  2. Once re-authorized, test the workflow to confirm that leads are being forwarded successfully to your CRM.

  3. Unfortunately, the leads that are generated need to processed manually as the lead data is not received at Pabbly's end due to token expiration.

Please try the above steps and let us know if the issue persists.

Best regards, Team Pabbly Support

Thanks & Regards,

Adeel Akhtar
🌐 Pabbly.com

Nitish Kumar — Reply ·
Hi Team,

We tried the suggested method, but unfortunately, it did not work for us.

It would be helpful if we could connect over a call to troubleshoot the issue together. 
Please let us know a suitable time for you, and we will be happy to join.

Best regards,
Pabbly Support — Reply ·

Hello Nitish,

Could you please share the Workflow URL so that we can look into it and provide information accordingly?

Please be aware that to assist you effectively, we may need to access your Pabbly Connect account. If you're comfortable with this, please grant us permission by stating in your next email: "You have my permission to log into my Pabbly Connect account, and edit workflow {If required}. Here is the registered email address associated with it."

Thanks & Regards,

Adeel Akhtar
🌐 Pabbly.com

Nitish Kumar — Reply ·
Hi Team,

You have my permission to log into my Pabbly Connect account and edit the workflow {Europe Tour Generic Lead Form}.
Here is the registered email address associated with it.
Email: [email hidden]
Could we connect on a call to troubleshoot the issue together?
Please let us know a suitable time for you.

Best,
Nitish Kumar

On Wed, Jul 15, 2026 at 3:22 AM Pabbly Support <[email hidden]> wrote:

Hello Nitish,

Could you please share the Workflow URL so that we can look into it and provide information accordingly?

Please be aware that to assist you effectively, we may need to access your Pabbly Connect account. If you're comfortable with this, please grant us permission by stating in your next email: "You have my permission to log into my Pabbly Connect account, and edit workflow {If required}. Here is the registered email address associated with it."

Thanks & Regards,

Adeel Akhtar
🌐 Pabbly.com

Nitish Kumar — Reply ·
Hi Team Pabbly,

This is critical and is negatively impacting our business. 
Please assign someone immediately who can assist us on a call and resolve this issue right away.

Best regards,
Pabbly Support — Reply ·

Hello Nitish,

We checked the workflow "Europe Tour Generic Lead Form" and the task history of the workflow, the workflow is now executing normally and the leads are being fetched after the credentials are updated.

2026-07-16_03h28_50.pngThe Trigger contains full Lead data, which was not being received due to an invalid token, as you updated the connection, a new token has been generated. Try using the same Facebook connection in all the workflows.

image.png

Thanks & Regards,

Adeel Akhtar
🌐 Pabbly.com

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