Power Platform Community Forum Thread Details

Hi,

I have an action in PAD and I have Error message :

Does anyone already have this problem?
Thanks

Authentication failures on the IMAP server imap.gmail.com
Location: Subflow: Main, Line: 3, Action Name: Retrieve Email Messages

Correlation ID : 7a8e83fc-6475-4e53-bb4c-ae9aa4873fb3

Invalid credentials (Failure): Microsoft.PowerPlatform.PowerAutomate.Desktop.Actions.SDK.ActionException: Échec de l’authentification sur le serveur
IMAP imap.gmail.com. ---> MailKit.Security.AuthenticationException: Invalid credentials (Failure)
à MailKit.Net.Imap.ImapClient.<AuthenticateAsync>d__83.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
à System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
à System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
à MailKit.Net.Imap.ImapClient.Authenticate(Encoding encoding, ICredentials credentials, CancellationToken cancellationToken)
à MailKit.MailService.Authenticate(Encoding encoding, String userName, String password, CancellationToken cancellationToken)
à Microsoft.Flow.RPA.Desktop.Modules.Email.Actions.EmailActions.RetrieveEmails(Variant imapServer, Variant username, Variant varPassword, Variant mailFolder,
Variant fromContains, Variant toContains, Variant subjectContains, Variant bodyContains, Variant sentSince, Variant sentUpTo, Variant saveAttachmentsInto,
Variant& retrievedEmails, Int32 serverPort, Boolean enableSsl, Int32 retrieveOnlyUnread, Boolean saveAttachments, Boolean markAsRead, Boolean acceptUntrustedCertificates)
--- End of inner exception stack trace ---
à Microsoft.Flow.RPA.Desktop.Modules.Email.Actions.RetrieveEmails.Execute(ActionContext context)
à Microsoft.Flow.RPA.Desktop.Robin.Engine.Execution.ActionRunner.Run(IActionStatement statement, Dictionary`2 inputArguments, Dictionary`2 outputArguments)

Recup messages.jpg

Authentication failures on the IMAP server imap.gmail.com
Location: Subflow: Main, Line: 3, Action Name: Retrieve Email Messages

Correlation ID : 7a8e83fc-6475-4e53-bb4c-ae9aa4873fb3

Categories:

Power Automate Desktop

Hi all,

For Authentication failures on the IMAP server imap.gmail.com

Answering this Question in 2025

Open Gmail in a web browser.
Click the gear icon (⚙️) → See all settings.
Go to the "Forwarding and POP/IMAP" tab., make sure the setting below is same as in your side (Note: By default IMAP will be in Enabled State and this option will not appear here and Micorsoft removed Less Secure Apps option as well)

5. Click on Save changes at the end.

6. then on top-right click on icon followed by click on manage Accounts as same as in below pic

7. Click on Securtiy on Left side and scroll down to find 2- step Verification option

Under "Signing in to Google", enable 2-Step Verification (if not already on).
After enabling, click on this url (App passwords in gmail) to naviagte to App Password Page.
Provide a name (e.g., "Power Automate") in APP Name Textbox and click Create.
On Generate app Password Pop-up, copy that
Use this password (not your Gmail password) in Power Automate Desktop like below. (Note: put your email id and for password copy and paste the above step one)
This Will works and hope your flow runs successfully. Let me know, if this query resolves and makes your day much better.