LKBEN10644: User Domain - Login fails or has errors due to too many group memberships


User cannot login or misses resources provided by loginskript or group policies


User has too many group memberships for default kerberos token size


Errormessage upon user-logon:

"Error browsing user memberships - Error loading user object for user: <DOMAIN>\<USER>." and something like 'not sufficient memory for this task.' 

Other errors can be, that group policies (GPO) are not applied.

The solution can be to change the value for "MaxTokenSize" in your registry:


DWORD "MaxTokenSize" --> 0xFFFF (decimal 65535)

!!! this key changes kerberos authentication. The default value is 12000 (decimal).
!!! changing this key to values greater than 0xFFFF (or 65535) can cause "Timeout expired" errors in MS SQL Server communication or WBEM / RPC issues as SMS administrator

Nach einem Neustart können alle Gruppenmitgliedschaften ausgelesen werden.


The information provided in this document is intended for your information only. Lubby makes no claims to the validity of this information. Use of this information is at own risk!

About the Author

Author: Wim Peeters - Keskon GmbH & Co. KG

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience, including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform.