Network and Dial-up Connection Errors (MS Windows)

DUN Error 641 :: The server cannot allocate NetBIOS resources needed to support the client

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Ask your system administrator to increase the resource capacity of the remote access server, or use Services in Computer Management to stop nonessential services on your computer, such as Messenger and Network DDE.

DUN Error 642 :: One of your computer's NetBIOS names is already registered on the remote network

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Another computer with the same computer name is already logged on to the remote network. Each computer on the network must be registered with a unique name. Verify the following: · A computer with the same computer name as yours is not located on the network you are connecting to. · Your computer is not already physically attached to the network that you are attempting to connect to.

DUN Error 643 :: A network adapter at the server failed

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Report this error to your system administrator.

DUN Error 644 :: You will not receive network message popups

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Another computer that is already connected to the network is using your messaging name. Messages addressed to you are sent to that computer. If you want to receive messages at your remote workstation, you must remember to log off your office computer before you dial in to the network the next time.This error does not affect messaging through Microsoft Outlook, Microsoft Outlook Express, or Microsoft Exchange.

DUN Error 645 :: There was an internal authentication error

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An internal error occurred. Restart your computer to make sure that all recent configuration changes have taken effect.

DUN Error 646 :: The account is not permitted to log on at this time of day

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Your account is configured for limited access to the network. If you need to access the network at a different time of day than what is presently configured, ask your system administrator to change the configuration.

DUN Error 647 :: The account is disabled

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The user account is disabled. This may be due to repeated failed logon attempts or because the system administrator disabled the account for security reasons. Ask your system administrator to enable your account in Local Users and Groups.

DUN Error 648 :: The password for this account has expired

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If you connect through Network and Dial-up Connections, you are automatically prompted to change your password. If you connect by using the rasdial command, you can change your password by doing the following: · Press CTRL+ALT+DEL. · Click Change Password , and then follow the instructions on the screen. · If you belong to an administrators group and your password expires, another administrator must change your password. You cannot change the password yourself.

DUN Error 649 :: The account does not have permission to dial in

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The account does not have permission to dial in for one of the following reasons: · You have a valid account on the domain you selected, but your account does not have permission to access the network remotely. Ask your system administrator to enable dial-in permission for your user account, or enable dial-in permission in Routing and Remote Access. · Your account has either expired, been disabled, or is locked out, or your dial-in access has been locked out. · You are either attempting to connect outside of allowable server logon hours, attempting to connect outside of the times allowed for dial-in access, or the policy that applies to your account may not allow dial-in access. · A caller ID rule may prevent you from connecting. For example, your account may be required to dial in from a specific number. · The remote computer may only allow local accounts to connect. · An authentication protocol may be required that your computer cannot negotiate, or your computer may be attempting to use a protocol that is not authorized by the policy on the remote computer. If you have an account with dial-in permission on another domain, do the following to use your account on that domain:1. Right-click the connection, and then click Properties .2. On the Options tab, select the Prompt for name and password, certificate, etc. and Include Windows logon domain check boxes.3. On the Security tab, clear the Automatically use my Windows logon name and password (and domain if any) check box, and then click OK .4. Double-click the connection, and then click Dial .5. Specify the appropriate user name, password, and domain.

DUN Error 650 :: The remote access server is not responding

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One of the following may have caused this error: · The remote access server is not running. Contact your system administrator to make sure the server is running. · The line may be too noisy, or your modem may have failed to negotiate correctly with the modem of the remote access server at the selected speed. For either of these possibilities, lower the initial speed (bps) of the modem, and then redial. See To change the maximum modem port speed. · Check the Hardware Compatibility List to make sure that your modem is listed. For the most up-to-date list of supported modems, see the Hardware Compatibility List at the Microsoft Web site (http://www.microsoft.com/). If your modem is listed, contact the modem manufacturer to see if an updated Modem.inf file is available. · The modem's serial cable may need replacing. · The authentication settings for the connection may be incorrect. Contact your system administrator to make sure that your authentication settings meet those required by the remote access server. · The software compression and modem hardware compression for the remote access server may be enabled at the same time. Generally, the remote access server software compression is enabled and hardware compression is disabled.