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When I try to connect to a SharePoint Online via Powershell (using the script below) I always receive the error...

Connect-PnPOnline : The sign-in name or password does not match one in the Microsoft account system.

This would make sense if MFA was enabled. It is not. I am also able to connect to other SharePoint Online sites fine.

Powershell Script

$URL = "https://mysite.sharepoint.com"
$login = "[email protected]"
$pwd = "secure-password"

$pwd = ConvertTo-SecureString $pwd -AsPlainText -Force;
$credentials = new-object -typename System.Management.Automation.PSCredential -argumentlist $login, $pwd

Connect-PnPOnline -Url $url -Credentials $credentials
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  • Seems the issue is happening in specific site, can you login into the site with same username/password in browser ?
    – Jerry
    Dec 16, 2020 at 1:04
  • @Jerry_MSFT yes. Dec 16, 2020 at 20:32

1 Answer 1

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Likely due to Modern Auth.

Try:

Connect-PnPOnline -Url https://tenantName.sharepoint.com/sites/siteName -UseWebLogin
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  • "UseWebLogin" will work but how do you can not store credentials with that flag. Dec 16, 2020 at 2:29
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    You shouldn't store credentials. Use the Graph API with Client ID + Certificate, instead. docs.microsoft.com/en-us/azure/active-directory/develop/… You can then use Connect-PnPOnline -Url -ClientId <value> -Certificate (or -CertificatePath, etc.).
    – user6024
    Dec 16, 2020 at 16:54
  • That is just for an example. Once it's working then I can use credential manager. Regardless it doesn't work as intended. Dec 16, 2020 at 20:34
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    Not sure what you mean by doesn't work as the CID/Secret|Certificate certainly does work. Cred Manager, if I recall, will not work since you need to content with Modern Auth + MFA.
    – user6024
    Dec 17, 2020 at 18:41

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