Logon built-in can't handle "@" in password

Our application has a custom login screen that calls the logon built-in to connect to an Oracle database. If a user has a password that contains @, login fails which is understandable because the password and db sid are passed to it in the same string parameter, now with two "@"s in it.
I tried enclosing the password part in double quotes but it didn't help. Are there any other solutions than just not allowing "@" in passwords?

Are you sure the password was stored with the @, and not truncated? ;)

Similar Messages

Can Forms 4.5 handle expired passwords?

Is there a way that Forms 4.5 can handle an expired password in an Oracle 9.2 database? Apprarently, when the logon builtin is called and the user's password is expired, the form disconnects the user. Not even giving the user the chance to change their password.
Please help.
Thanks

There is some code on Metalink which you can use from earlier versions of Forms (those which did not automatically handle expired passwords)
Note: 52718.1 "Handling Expired Passwords from within Forms (V4.5/5.0)"
You neeed to write some Pro*C code and a forms trigger to do it - all the code is in the note

"Logon failure: unknown user name or bad password" even with correct Credentials

I have networked PCs before many times successfully, so this is not my first time trying to network PCs in a home environment. Though I’m wondering if Windows 8.1 is part of the problem.
I would have thought that for sure, until one of the new laptops running W8.1 would not connect to any of the other three PCs/Laptops running W8.1. Yet these other three W8.1 PCs/Laptops CAN connect to this laptop. Then it gets a little more interesting:
this same laptop that couldn’t connect to those three W8.1 PCs/Laptops, CAN connect to a Windows 7 desktop, and a XP Laptop, and those two can also connect back to it without issue. It’s almost like my network is divided in half, and only half can talk to
each other. But then when I thought it couldn’t get any more interesting, I realized the first three W8.1 PCs/Laptops can talk to the others, it’s just that the others (W8.1 Laptop, W7 Desktop, XP Laptop) can’t talk back to them without getting the error,
"Logon failure: unknown user name or bad password” even though the username and password are 100% correct.
I don’t fully understand this error, because on the surface, it’s just WRONG!
My username and password are correct, but it appears something somewhere is interfering or hijacking the authentication process. Three of the computers (laptops) are brand new, just purchased last week and setup this week. The HostPC is also fairly new,
just purchased last month.
I am not using a HomeGroup, and have removed all computers that were part of a HomeGroup. I have enabled file sharing and network discovery and enabled “Use user accounts and passwords to connect to other computers” on all PCs.
I have DSL and am using the wireless modem provided by my ISP which has router functionality built into it. It is a Sagemcom Model: F@ST 1704N.
All computers are connected wirelessly. Time is correct on all PCs. I cannot use Group Policy, since they're all Standard or Home edition. DHCP is enabled and all computers are on the same subnet, using the 192.168.254.x range of ip addresses.
The six computers are as follows: (I figured this may make is easier to visualize the layout)
HostPC: HP Desktop W8.1
PC Name: DrsBlend
U/N: DrsBlend p/w: 123456 (not showing my real password)
PC1: HP Laptop W8.1
PC Name: DrsBlend-1
U/N: DrsBlend    P/W: 123456
PC2: HP Laptop W8.1
PC Name: DrsBlend-2
U/N: DrsBlend    P/W: 123456
PC3: HP Laptop W8.1
PC Name: DrsBlend-3
U/N: DrsBlend    P/W: 123456
PC4: HP Desktop W7 SP1
PC Name: DrsBlend-4
U/N: DrsBlend    P/W: 123456
PC5: Dell Laptop XP SP3
PC Name: DrsBlend-5
U/N: DrsBlend    P/W: 123456
Every PC stated above has the same user name and password and is logged-in with the username, DrsBlend and the password 123456. The "Logon failure: unknown user name or bad password” happens when trying to access HostPC, PC1, or PC2 from PC3, PC4, or
PC5.
The HostPC can see and connect to all the PCs, but only PC1 and PC2 can talk back or access the HostPC.
It’s like the HostPC and PC1, and PC2 are in their own little clique, and can talk back and forth to each other. Those three PCs can also talk to PC3, PC4, and PC5 as well, but PC3, PC4, and PC5 cannot talk back to them (HostPC, PC1, PC2).
Profile corruption? I would have entertained that thought, but the fact the first three PCs can access and talk to one another kind of defeats that idea, and the fact the PCs were just recently setup.
Firewall? Disabled, and disabled TrendMicro with no change. With them on/off, the first three PCs can still talk to each other and the rest of the PCs.
Anyone have any additional suggestions?

Hi，
How did you connect to other PCs? Do you use RDP to connect to other PCs? If so, check the version of the RDP, as I know, some low version RDP can't connect to higher Windows like 8.1.
And could you please tell us the detailed information about how the six PCs connect to the home network?
Can PC1, PC2, PC3 ping back to host PC, PC1 and PC2?
You can also run command " rundll32.exe keymgr.dll, KRShowKeyMgr " view the credentials stored in your PC,check whether this issue is related with some old credentials stored in your system.
Yolanda Zhu
TechNet Community Support

How can I change the password in the iBook donated to our nonprofit. No password was given with the iBook? We need to put in printer and other software. Help, we can use the laptop without changing the password.

How can we change the password in the iBook donated to our nonprofit? No password was given with the iBook and every time we try to install items, the password window pops up. We need to put in printer and other software. Help! We can use the laptop without changing the password.

If you did not get an OS X install-restore DVD with the computer you may need
to buy one from somewhere, and you may be lucky to get a retail OS X 10.5.x
version. The original grey-label install set of software and OS X it shipped with
likely would be an older system than Leopard 10.5. Last versions of G4 Mac, &
G5, shipped with a Tiger 10.4 system; so did early Intel-based Mac. Grey discs
which accompanied other computer build models generally do not interchange.
The last OS X version a PowerPC architecture can use, if supported, is 10.5.8.
A PPC processor at 867MHz & faster should be able to run OS X 10.5 Leopard.
{With the correct disc installer, you can use it to change a password and other
things including re-install, and perform disk utility functions, etc.}
There is a chance you may be able to get a white-label Replacement 10.4 DVD
or Replacement 10.5 DVD from AppleCare or the online Apple Store (800myapple)
from a Mac OS X system specialist; these have been available yet hard to get
as not all persons involved with them seem to know if they still exist until someone
is asking. These aren't retail stock, are special discs for computers who could use
a system later than original old discs; these are complete install discs not for one
specific series of Mac. Generally they'd work in supported PowerPC G4/G5; but
do not replace specialized original install DVD, such as an early Intel mac requires.
You'd need to have a serial number of the computer, and a method of payment
when seeking some replacement system media from Applecare or Apple sales
and these discs are not available in a retail store. The original Retail discs are
labeled differently and shipped in a retail box with a big X on the front. Other
sources for retail 10.4 Tiger or 10.5 Leopard may be online via amazon sellers
or computer resellers who handle repaired Macs. Avoid mystery grey label ones
that were intended to be sold and kept with their original computer kits.
Good luck!

How can I change the password for the USER in SAP.

How can I change the password for the USER in SAP?
also I want to change the Language and date Format b/c it's displaying in German language..

Hi,
Assuming that User has already his/her user-id and password, and now he/ she wants to change it.
select the client and provide Log-in credentials. Now, instead of 'ENTER' there is one Tab: 'New Password' (up, left hand). Click it.
Now, system will ask for new password to change.
If you are asking from Basis point of view, then T.code: SU01 - User Maintenance.
Enter User's id and Click Change icon.
It will lead to Page: Maintain User.
Here, Select tab: Logon Data
There is a Sub-Tab: Password.
Here, key-in change password and SAVE.
For Language and Date format, contact your Basis-Personnel.
Best regards,
Amit

My main account on my iPad is based off an email address that no longer exists and can not be recreated. On top of that I forgot the password and answers to the security questions. So I can not reset the password. any suggestions?

I Now get constant pop ups to logon to iCloud but it wants a password that I forgot. I also forgot the security question answers. It can not email me a password reset because the email no longer exists and Verizon won't let me recreate it. I know this will sound crazy but when I created the original Apple account with the old email address I put in a bogus birthdate because I do not like giving out personal info.
i Just want to do something to stop the iCloud popups.

Try contacting Support in your country, after confirming your id and that it's your account they should be able to reset its password.
Contacting Apple about account security : http://support.apple.com/en-us/HT5699
If your country isn't on that page then try this form and explain and see what they reply with : https://ssl.apple.com/emea/support/itunes/contact.html
When they've done that update the primary email address on the account to be an account that you have access to e.g. by tapping on it in Settings > iTunes & App Store and logging into it, via the Store > View Account menu option on your computer's iTunes, or via the 'manage your apple id' button on http://appleid.apple.com

Using LOGON built-in in a menu module

Hi, we are using the LOGON built-in in a menu to connect with the same user and password to another database when you click on it.
We are using FORM_SUCCESS then to know if the new connection was succesfull or not.
Now, if the new connection failed we need to capture then reason in order to give more detailed information of the error.
In form, if LOGON failed fires ON-ERROR trigger but in a menu there is no triggers.
Any idea?
Thanks

You could create a dummy-form which does the logon and catch your exceptions in its ON-ERROR-trigger. Then call that form from your menu.

System Error: Logon failure: unknown user name or bad password

Hello experts,
my system NW2004s (SPS14.1) is producing a lot of the following error messages caused by the internal user Guest... The system user Guest has all the necessary rights using a service user.
*getting mapped math - java.io.IOException: Logon failure: unknown user name or bad password*
at java.io.WinNTFileSystem.canonicalize0(Native Method)
at java.io.Win32FileSystem.canonicalize(Win32FileSystem.java:333)
at java.io.File.getCanonicalPath(File.java:513)
at com.sapportals.wcm.repository.util.file.StdFileImpl.getCanonicalPath(StdFileImpl.java:74)
at com.sapportals.wcm.repository.util.file.StdFileImpl.getCanonicalFile(StdFileImpl.java:70)
at com.sapportals.wcm.repository.manager.sfs.FSRepositoryManager.startUpImpl(FSRepositoryManager.java:141)
at com.sapportals.wcm.repository.manager.AbstractRepositoryManager.start(AbstractRepositoryManager.java:538)
at com.sapportals.wcm.crt.CrtThreadSafeComponentHandler.tryToStart(CrtThreadSafeComponentHandler.java:246)
at com.sapportals.wcm.crt.CrtThreadSafeComponentHandler$1.run(CrtThreadSafeComponentHandler.java:252)
at java.util.TimerThread.mainLoop(Timer.java:432)
at java.util.TimerThread.run(Timer.java:382)
I am not sure about the severity of the error. I can observe the error message almost every minute in the Log file and I have the impression that this message occours more often before the portal has more "problems" in general and is for a short time not accecible (it freezes and sometimes a java server restarts itself). I am asking myself if this error message could give a hint for the system crash we have had today. (a restart of the host was needed.)
However I would like to know what causes the error message?
It is a critical error message? It means can it cause a system crash? Or is it not important?
What can I do to solve the problem?
I appreciate your helful answers.
Thanks in advance.
Thomas

I think the password for the proxy account needs to be changed (expired)
Arthur My Blog

Windows 2008 R2 Active Directory User can not change their password

Our AD domain already having two domain controllers with windows 2008 (not R2), last week we added one more domain controler with windows 2008 R2 for that we run domain prep and forestprep. After this domain no users can change their password by pressing ALT+CTRL+Del--Change password. Administrators can still reset the password, and if administrator provide the option change password and at next logon, it works, users can reset the password. But after login they can not.
The error telling the new password does not meet length,complexity, history requirements. We are sure their is no Group policy which setting password/account policy. And even we tried to attach a simple password policy domain level with out complexity.
Please provide a feedback..waiting for your response.
Thanks

additional info: up to Server 2008 R2, Windows ONLY supports ONE Password policy PER Domain. (exept: the R2 supports more pw-policies, but not with gpo, it has to be congifured with ADSI-Editor)
So, in case you still use the 2008 / R2 - you Need to know that ;))
regard..
Stephan Ertel - MCITP/MCSA -
From Windows 2008(Non R2) and higher is supported for more than one password policy with fine granted password polcy.DFL should be 2008.
HTH
Biswajit Biswas
My
Blogs|MCC
|
TNWiki
Ninja
Best regards Biswajit Biswas Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. MCP 2003,MCSA 2003, MCSA:M 2003, CCNA, MCTS, Enterprise Admin

Can I create a password protected page for member's only?

Can I create a password protected page for member's only?

PASSWORD PROTECTING A PAGE WITH A NICE BOX DESIGNED INTO YOUR PAGE
FINALLY, I'VE FOUND AN ANSWER TO PASSWORDING A PAGE OR SECTION WITH ADOBE MUSE WITH GREAT SIMPLICITY AND ALLOWING YOU TO 'DESIGN' THE PASSWORD BOX INTO YOUR PAGE!!!
Even better is that you don't HAVE to have username AND password (although you could if you wanted to), so just a simple PASSWORD box and enter button DESIGNED BY YOU WITHIN YOUR PAGE, rather than nasty popups etc. Importantly, the password itself is NOT within the source code of your page either!!
The solution is at Jotform.com. I believe you can do this with a FREE ACCOUNT, although it's SUCH a great service for Musers that I paid for a proper account.
Before you do this, create a page on your site saying "Wrong Password. Please go away" or something to that effect. You'll need it for when they enter the wrong password.
So, in Jotform, you just create a new form and:
1. Drag on a password box (it's in the power tools section)
2. Select it and go to Conditions
3. Go to Change Thank You URL after submission
4. Enter: If [name of your password box] field EQUALS TO [enter your password]
5. In the "Then redirect to" box, enter the URL of your protected page and click save
6. In the resulting box click "ADD A NEW CONDITION" and do the SAME as stets 3 to 5 but this time say NOT EQUALS TO" with your same password and in the "Then redirect to" box, enter the URL of your WRONG PASSWORD page and click save
7. Embed the button on your page and you're done!!!
If you want to mess about with the EXACT alignment of a right aligned button and text box, you can go to Preferences and in the box which allows you to add your own custom CSS, enter the following code and mess about with the values until it's perfect for you:
.form-buttons-wrapper { padding-top:3px !important; }#id_2 {margin-left: -50px !important;}
Here's an example, built in Muse: www.hileytv.com/about.html
I hope this helps my fellow Musers!
Marcus

Windows Security Error! Logon failure: unknown user name or bad password

We RANDOMLY can't access one of the computers in our company's network. It is now saying - Windows Security - Logon failure: unknown user name or bad password. It doesn't matter what I put in for a user name and pw it still doesn't work.
Any help is much appreciated!

To be added, if it is part of domain, is this computer had local account? If so, try to logon local account for test, If sucessfully, follow Cyber's suggestion remove PC from domain and rejoin it for test.
If not, you can try to boot system into recovery mode and choose recovery computer for test.
Press F8 at startup, then choose Recovery system.
Roger Lu
TechNet Community Support

EffectiveUserName Logon failure: unknown user name or bad password

Hi
I am trying to connect Sharepoint 2013 services (performancepoint , excel services) to SSAS 2012 using the EffectiveUserName.
I was getting a error message regarding conencting the datasource and when checking profiler it was saying Logon failure: unknown user name or bad password.
On the SSAS server i tried using EffectiveUserName in the additional Connection Parameters and it failed for the above reason. I also tried my username as well as the sharepoint service account
the sharepoint service account and my username are both server admins.
When I try using the EffectiveUserName in the additional Connection Parameters on another server I can connect with no problems.
What seems to be the different with server where I am getting the error message?
Regards

Hi aivoryuk,
According to your description, you get the "unknown user name or bad password" error when using EffectiveUserName in Connection parameter to connect Analysis Services. Right?
In this scenario, if you use a connection string to create the data connection, and the connection string contains an effective user field, the EffectiveUserName feature will override the user-supplied effective user value with the system-supplied value.
On this server, you may use a domain user to run the SSAS. So it will show the "unknown user name or bad password." However, on the other server, it may use system build-in account to run SSAS. Please refer to link below to check the steps for using
Analysis Services EffectiveUserName in SharePoint Server 2013:
https://technet.microsoft.com/en-us/library/jj219741(v=office.15).aspx
If you have any question, please feel free to ask.
Simon Hou
TechNet Community Support
Hi thanks for the link but it just shows how to set effective user name in sharepoint which I know how to do.
In SSMS and when I connect to the SSAS server and I select options and then I go to the addional connection parameters tab i set Effectivename ="domain\username" on once server I get the error mesage but on the other I don't.
I'm not clear from you explanation as to why this is?
Regards

Logon failure: unknown user name or bad password.

Hai,
I am trying to move the file from application server to folder in non-sap server using DOS commands in a batch file.
Commands in the batch file is below.
E:
cd E:\HSBC\HSBC_IN\
for /f %%a IN ('dir /b *.xml') do (
move %%a
host name\HSBC\Temp
exit;
I have created a command in SM69(E:\HSBC\hsbc.bat) and trying to execute, it is properly executing in Development server and file is moving. Same is not executing in Quality server. Its giving an error as Logon failure: unknown user name or bad password. External program terminated with exit code 1. For that destination folder i have given permission for both Delelopment server and Quality server.
Please help on this issue with high priority .
<priority is downgraded>
Thank you.
Edited by: Suhas Saha on Sep 12, 2011 2:52 PM

Hi,
May be my suggestion is a stupid one but still you can just look into it if nothing works out.
See the non-SAP server you are mentioning here, should also be same type I mean if you are moving file from SAP-DEV then the non-SAP server also should be of type DEV, SAP-Quality to Non-SAP Quality etc
Check this.

Logon failure: unknown user name or bad password... ?Authenticator class?

I'm connecting to a MS Exchange server (internally) but I'm getting the following error:
........Non SSL........
POP3: connecting to host "xxxx.xxx.com", port 110
S: +OK Microsoft Exchange POP3 server version 5.5.2658.25 ready
C: USER [email protected]
S: +OK
C: PASS
S: -ERR Logon failure: unknown user name or bad password.
C: QUIT
S: +OK Microsoft Exchange POP3 server version 5.5.2658.25 signing off
test2 :: javax.mail.AuthenticationFailedException: Logon failure: unknown user name or bad password.
I can get my email using Outlook because I don't have to provide a password to connect. So I left it blank in my program but I still can't
login. Does this mean that I need to use the authenticator class?
Here's the code I'm using to connect:
public class ListMailSubjectLines
     private static void ListMailSubjectsLines()
          try
               Properties pop3Props = new Properties();
               Session session = null;
               Store store = null;
               pop3Props.put("mail.pop3.host","xxxx.xxx.com");
               pop3Props.put("mail.user","[email protected]");
               pop3Props.setProperty("mail.passwd","");
               //     String host = "";
               //     String username = "";
               //     String password = "";
               if((pop3Props.getProperty("mail.pop3.ssl") != null) && (pop3Props.getProperty("mail.pop3.ssl").equalsIgnoreCase("true")))
                    System.out.println("........SSL........");
                       String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
                       pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
                       pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
                       String portStr = ((pop3Props.getProperty("mail.pop3.port") != null) ? pop3Props.getProperty("mail.pop3.port") : "110");
                       pop3Props.setProperty("mail.pop3.port", portStr);
                       pop3Props.setProperty("mail.pop3.socketFactory.port", portStr);
                       URLName url = new URLName("pop3://"+pop3Props.getProperty("mail.user")+":"+pop3Props.getProperty("mail.passwd")+"@"+pop3Props.getProperty("mail.host")+":"+pop3Props.getProperty("mail.pop3.port"));
                       session = Session.getInstance(pop3Props, null);
                       store = new POP3SSLStore(session, url);
               else
                      System.out.println("........Non SSL........");
                       session = Session.getInstance(pop3Props, null);
                       store = session.getStore("pop3");
session.setDebug(true);
               store.connect(pop3Props.getProperty("mail.host"), pop3Props.getProperty("mail.user"), pop3Props.getProperty("mail.passwd"));
               //store.connect(host, username, password);
                 Folder folder = store.getFolder("INBOX");
               folder.open(Folder.READ_WRITE);
                 Message[] Msgs = folder.getMessages();
               for(int i = 0; i < Msgs.length; i++)
                   System.out.println(Msgs.getSubject());
               folder.close(true);
               store.close();
               System.out.println(Msgs[0].getSubject() + "test");
               catch(NoSuchProviderException ec)
                    System.out.println("test1");
               catch(MessagingException em)
                    System.out.println("\ntest2 :: " + em);
     public static void main( String args[] )
               ListMailSubjectsLines();
Thanks,
ls6

In case anyone wants to see the format and the final code here it is:
Login name format:
pop3Props.setProperty("mail.user","TEST_DOMAIN\\UserID\\mailboxID");
Code
import com.sun.mail.pop3.POP3SSLStore;
import javax.mail.URLName;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.NoSuchProviderException;
import javax.mail.MessagingException;
import java.util.Properties;
public class ListMailSubjectLines
     private static void ListMailSubjectsLines()
          try
          Properties pop3Props = new Properties();
          Session session = null;
          Store store = null;
          pop3Props.put("mail.pop3.host","mailHOST");
          pop3Props.setProperty("mail.user","TEST_DOMAIN\\UserID\\mailboxID");
          pop3Props.setProperty("mail.passwd","passWord");
          if((pop3Props.getProperty("mail.pop3.ssl") != null) && (pop3Props.getProperty("mail.pop3.ssl").equalsIgnoreCase("true")))
               System.out.println("### SSL ###");
                  String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
                  pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
                  pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false");
                  String portStr = ((pop3Props.getProperty("mail.pop3.port") != null) ? pop3Props.getProperty("mail.pop3.port") : "110");
                  pop3Props.setProperty("mail.pop3.port", portStr);
                  pop3Props.setProperty("mail.pop3.socketFactory.port", portStr);
                  URLName url = new URLName("pop3://"+pop3Props.getProperty("mail.user")+":"+pop3Props.getProperty("mail.passwd")+"@"+pop3Props.getProperty("mail.pop3.host")+":"+pop3Props.getProperty("mail.pop3.port"));
                  session = Session.getInstance(pop3Props, null);
                  store = new POP3SSLStore(session, url);
          else
                 System.out.println( "### Non SSL ###" );
                  session = Session.getInstance( pop3Props, null );
                  store = session.getStore( "pop3" );
//System.out.println(session.getStore());
session.setDebug( true );
               store.connect(pop3Props.getProperty( "mail.host" ), pop3Props.getProperty("mail.user"), pop3Props.getProperty("mail.passwd"));
               if( store.isConnected() )
                       System.out.println( "\nCONNECTED\n" );
               Folder folder = store.getDefaultFolder();
               folder = folder.getFolder( "INBOX" );
               folder.open( Folder.READ_WRITE );
               Message[] Msgs = folder.getMessages();
               for( int i = 0; i < Msgs.length; i++ )
                                     System.out.println( Msgs.getSubject() );
               folder.close( true );
               store.close();
          Folder folder = store.getFolder( "INBOX" );
          //Folder folder = store.getDefaultFolder();
          //folder = folder.getFolder( "INBOX" );
          folder.open( Folder.READ_ONLY );
          Message[] Msgs = folder.getMessages();
          for( int i = 0; i < Msgs.length; i++ )
               System.out.println( folder.getUnreadMessageCount() );
               System.out.println( Msgs[i].getSubject() );
               System.out.println( Msgs[i].getContentType() );
               System.out.println( Msgs[i].getSize() );
          folder.close( true );
          store.close();
          catch(NoSuchProviderException nSPE)
               System.err.print( "### Line[88] ### " );
               System.err.println( nSPE );
          catch(MessagingException mE)
               System.err.print( "### Line[93] ### " );
               System.err.println( mE );
public static void main( String args[] )
          ListMailSubjectsLines();

Recently updated to 3.8.2 v1.1 and since then my mac crashes a lot, and can't handle simple tasks. Has anyone else had this problem?

I recently got told about the new software update for OS Yosemite. It was version 3.8.2 v1.1 and since then my mac crashes a lot, and can't handle simple tasks. Like playing a 3 minute song, checking emails, and even whilst typing this its crashed so many more times than i've lost count. Has anyone else had this problem? And what do you recommend I do?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Logon built-in can't handle "@" in password

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