How do you set MaxTokenSize?

How do you set MaxTokenSize?

How do you set MaxTokenSize?

In the Hive list, click HKEY_LOCAL_MACHINE. In the Key Path list, click SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\Parameters. In the Value name box, type MaxTokenSize. In the Value type box, click to select the REG_DWORD check box.

How do I fix token bloat?

How to Fix Token Bloat? By overriding the default value of “MaxTokenSize” registry entry, which is located under System\CurrentControlSet\Control\Lsa\Kerberos\Parameters, you can avoid the token bloat error during the login.

What is Kerberos token size?

Today, the default maximum size of a Kerberos authentication package specific token is 12000 bytes in Windows Server 2003 and Windows Server 2008, and 48,000 bytes in Windows Server 2012. Microsoft has also provided efficient ways to add this Registry key to mulitple computers in a domain.

What is Kerberos token bloat?

Token Bloat occurs when you are a member of too many groups in Active Directory. At somewhere around 125 groups, your Kerberos token size reaches 64kb in size. That’s the limit for a lot of things that use Kerberos authentication. You may not be able to connect to Kerberos-enabled IIS web sites.

How do I enable Kerberos logs?

Enabling Kerberos Event Logging on a Specific Computer

  1. Start Registry Editor.
  2. Add the following registry value: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\Parameters.
  3. Quit Registry Editor.
  4. You can find any Kerberos-related events in the system log.

How do I configure Kerberos?

Configure Kerberos single sign-on (SSO) if your network supports it.

  1. Enter the. Kerberos Realm. (up to 127 characters) to specify the hostname portion of the user login name. For example, the user account name [email protected] has the realm EXAMPLE. LOCAL.
  2. Import. a. Kerberos Keytab. file. When prompted, Browse.

How do I verify a Kerberos token?

How do you authenticate with Kerberos?

  1. Client requests an authentication ticket (TGT) from the Key Distribution Center (KDC)
  2. The KDC verifies the credentials and sends back an encrypted TGT and session key.
  3. The TGT is encrypted using the Ticket Granting Service (TGS) secret key.

How big is the maxtokensize on Windows Server?

Windows Server 2008 R2 and earlier versions, and Windows 7 and earlier versions: 12,000 bytes Windows Server 2012 and later versions, and Windows 8 and later versions: 48,000 bytes Generally, if the user belongs to more than 120 universal groups, the default MaxTokenSize value does not create a large enough buffer to hold the information.

How to add maxtokensize registry entry in Windows Server?

In Windows Server 2008 domains and in Windows Server 2008 R2 domains, you can use the Registry Client-Side Extension to deploy the MaxTokenSize registry value to multiple computers in a domain. To create the MaxTokenSize value setting in a GPO, follow these steps:

How to create an ADM for maxtokensize?

Create an Administrative Template (ADM) file for the MaxTokenSize registry entry. To do it, follow these steps: Start Notepad. The value of the MaxTokenSize registry entry is set to 48000. This is the suggested value.

When to set maximum Kerberos context token size?

The Set maximum Kerberos SSPI context token buffer size policy setting is added in Windows Server 2012 and in Windows 8. The policy setting is supported in Windows XP, in Windows Server 2003, in Windows Vista, in Windows Server 2008, in Windows 7, and in Windows Server 2008 R2.