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Create a new User Flow with "User ID Signup".
Run the user flow.
On the login page, right-click "sign up now" and open in a new tab.
Switch back to login page and submit with any random username / password.
Error is thrown "Missing required element [New Password]".
Although the login page was submitted, it seems user flow assumes that the signup page is being submitted. This is a problem with custom policies too.
Hi @Sahil Shah • Thank you for reaching out.
Yes, this is a known issue. When B2C sign-in/sign-up page is opened in multiple tabs within the same browser session, leads to unexpected behavior.
As of now, B2C doesn't allow multiple sign-ins within the same browser session. You have to either use a different browser or an incognito/in-private browser for simultaneous sessions.
I would suggest submitting feedback regarding this at Azure Feedback Portal, which is monitored by Azure product teams for product improvements.
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Hi @Sahil Shah • I checked with the product team regarding this issue. They are working on updating the user journey to address this issue in near future. However, there is no ETA as of now.
@AmanpreetSingh-MSFT Thank you for taking time to look into this issue. Your posts has helped me a lot in tackling many issues with custom policies. Really appreciate your efforts here.
@Sahil Shah • Thank you for your feedback and for recognizing the efforts.
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@AmanpreetSingh-MSFT Do we have any update on this? Is there an ICM/BUG case on this that can be tracked?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(89.60000000000001, 28.000000000000004%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWJ%3C/text%3E%3C/svg%3E)
@AmanpreetSingh-MSFT , Has there been any movement on this multiple tabs issue with Azure B2C? Are there any work arounds so the end user doesn't see a bad request message when trying to login on multiple tabs?
Hello @Dustin Stepanek and thanks for reaching out. For updated information please take a look to: https://learn.microsoft.com/en-us/answers/questions/1016334/azure-ad-b2c-userflowcustom-policy-restarting.html?childToView=1027543#answer-1027543
Hello @Woolever, Jeremy and thanks for reaching out. For updated information please take a look to: https://learn.microsoft.com/en-us/answers/questions/1016334/azure-ad-b2c-userflowcustom-policy-restarting.html?childToView=1027543#answer-1027543