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Titel
Error: "Index and length must refer to a location within the string. Parameter name: length" in Management Portal -
Beschreibung
Error: "Index and length must refer to a location within the string. Parameter name: length" when using "Request a software token" in the Defender Management Portal.
Logs show the error "TokenRequestWizard - Failed to run the Token Request Wizard System.ArgumentOutOfRangeException: Index and length must refer to a location within the string. Parameter name: length"
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Ursache
CAUSE 1
This issue occurs when the AD user requesting the token telephoneNumber attribute is less than 4 characters (on the General tab of the AD users properties | Telephone number)
CAUSE 2
This issue occurs when the AD user is a member of over ~500 AD grups -
Lösung
WORKAROUND1 - Change the users to have four or more digits for their telephone number.
2 - Reduce the amount of groups the users is a member ofSTATUSWaiting for fix in a future release of Defender -
Änderungsanforderung
500298, 500304