Power Automate - Notion connector stopped working on 2026-08-18 - error: API token is invalid

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Posted on by ZJ-24080948-0

Hi,

I use Power Automate - Notion connector to create calendar entries as Notion pages. It has been working without any issues for 1 year.

Since 18 August, it gives an error message: "API token is invalid".

I tried recreating the API access token in Notion, but nothing changed. Also, I tested the API connection via command prompt (curl) and it works well, so it is an issue with Power Automate.

I changed my Power Automate license from Free to Premium, but the issue is the same.

Any help is appreciated.

Best Regards, Zoltan

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11manish 4,407 Super User 2026 Season 2 on at

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Your testing already provides strong evidence that Notion is accepting the token and the problem is likely in the Power Automate connection/Notion connector

path. The most valuable next step is to test a brand-new Power Automate connection in a brand-new minimal flow. If that also fails with a token independently

verified by curl, stop regenerating tokens and escalate the connector issue to Microsoft.
ZJ-24080948-0 2 on at

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Thank you 11manish,
I wrote to Power Automate support and also to the creator of the Notion connector.
We will see what happens.
CU11071405-0 4 on at

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More like a connector side issue than a problem with your Notion token, especially since the same token works with `curl`. Try deleting and recreating the Notion connection in Power Automate and reauthorizing it completely. If that doesn’t help, check whether the connector had a recent update or outage around August 18, as the error may be coming from the connector itself.