| Event Information | According to Microsoft :
Cause :
This event is logged when there are two or more objects that have the same SID attribute in the SAM database.
Resolution :
Recreate deleted accounts
Accounts with duplicate security identifiers (SIDs) were created. The system deleted all accounts with duplicate SIDs. Event Viewer lists one event for each deleted account. Review the name of each deleted account, and create the user accounts again as needed. Perform the following procedure using a domain member computer with the domain administrative tools installed.
To perform this procedure, you must have membership in Domain Admins or you must have been delegated the appropriate authority.
To create an account in Active Directory Users and Computers:- Open Active Directory Users and Computers. To open Active Directory Users and Computers, click Start. In Start Search, type dsa.msc, and then press ENTER.
- In the console tree, expand all the objects. Right-click the container in which you want to create the new account, click New, and then click the type of account that you want to create. Fill out all the required fields (and any of the appropriate optional fields) in the dialog box that appears for the specific type of account that you select.
If you select the account types User or InetOrgPerson, an additional dialog box appears. Click Next to advance to the next dialog box, and then fill out the appropriate information. - When you have filled out all the appropriate information and you are ready to create the account, click OK.
Verify :
To verify that security identifier (SID) and name lookup operations are functioning properly, you must have a utility that can translate account names to SIDs. PsTools from Microsoft includes the PsGetSid utility, which translates account names to SIDs and SIDs to account names. Perform the following procedures using a computer that is a domain member.
To perform these procedures, you must have membership in Domain Admins or you must have been delegated the appropriate authority.
Obtain and extract PsTools
To obtain and extract PsTools:- Download PsTools.
- Extract PsTools.zip from your download folder to a new folder named PsTools. For example, to extract PsTools.zip to a PsTools folder on the C: drive, right-click the PsTools.zip file, and then click Extract All. In the Extraction Wizard, click Next. In Files will be extracted to this directory, type C:\PsTools, and then click Extract.
- Close the extraction destination folder (C:\PsTools), which automatically opens in a new window when the extraction is complete.
Verify that lookup operations succeed
To verify that lookup operations succeed:- Open a command prompt as an administrator on the local computer. To open a command prompt as an administrator, click Start. In Start Search, type Command Prompt. At the top of the Start Menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
- Change the directory path to the folder where you extracted PsTools.
- At the command prompt, type net config rdr, and then press ENTER. In the resulting command output, note the Workstation domain name, which is used in the following command.
- Type psgetsid domainname\guest, and then press ENTER, where domainname is the Workstation domain name in the output from the previous command:
- If this is the first time that you are running psgetsid on this computer, the PsGetSid License Agreement appears. Read the license agreement. If you agree to the terms, click Agree. If you do not agree to the terms, you cannot verify lookup using PsGetSid or continue with the following directions.
- The output from this command displays the SID of the guest account for the domain. This SID starts with S-1-5-21 and ends with -501. The domain guest account SID is used in the following command.
- Type psgetsid dgsid, where dgsid is the domain guest account SID that is displayed by the previous command, and then press ENTER. The output of the command translates the SID to the name of the domain guest account.
- Type hostname, and then press ENTER. The output of the command displays the local computer name, which is used in the following command.
- Type psgetsid hostname \guest, and then press ENTER, where hostname is the name of the local computer that appears after you run the hostname command. The output from this command displays the SID of the guest account for the local computer. The local guest account SID starts with S-1-5-21 and ends with -501. However, it should have a different set of digits between S-1-5-21 and -501 than the domain guest account SID. The local computer guest account SID is used in the following command.
- Type psgetsid lgsid, where lgsid is the local computer guest account SID that is displayed by the command that you ran in the previous step, and then press ENTER. The command output translates the SID to the name of the local computer guest account.
If these commands run without error, the lookup operations are functioning successfully. |