Error message trying to log into Gmail Backup

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What steps will reproduce the problem?
1.Hit back up button
2.Can't get past the backup page
3.

What is the expected output? What do you see instead?
It should start backing up and it doesn't. It worked fine on my old win& Pro 
machine, but can't get it to work on this new one.

What version of the product are you using? On what operating system?
version:15 (2011-03-07) on Windows 7 Professional.

Please provide any additional information below.
This is the error I get: Error: IMAP: [ALERT] Please log in via your web 
browser: http://support.google.com/mail/accounts/bin/answer.py?answer=78754 
(Failure)

Original issue reported on code.google.com by lensta...@gmail.com on 31 Jul 2014 at 11:22

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Got same error after several tries with 20110307 version of gmail backup 
installation on windows 7 machine.
Error: IMAP: [ALERT] Please log in via your web browser: 
http://support.google.com/mail/accounts/bin/answer.py?answer=78754 (Failure)

Original comment by oruganti...@gmail.com on 23 Aug 2014 at 9:23

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I am still waiting for a solution to this problem. The backup is totally 
useless until this issue gets addressed. 

Original comment by lensta...@gmail.com on 23 Aug 2014 at 10:25

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This is the error I get every time I try to stat my back up:

GMail Backup revision 691 (2009-02-20)
Starting backup of account lenstaley@gmail.com into F:\Len's 
Office\GmailBackup\2014\Jan-Feb
Error: IMAP: [ALERT] Please log in via your web browser: 
http://support.google.com/mail/accounts/bin/answer.py?answer=78754 (Failure)

It would be nice to get this fixed. 

Help!!!

Original comment by lensta...@gmail.com on 3 Sep 2014 at 8:57

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Same issue for me.

I wonder if my credentials was OK but when I intentionally entered wrong 
credentials, the error message was significantly different. So, my credentials 
are OK but I still got the same error message, like other guys :  
http://support.google.com/mail/accounts/bin/answer.py?answer=78754 (Failure)

Any help / fix would be appreciated

Cheers

Original comment by cyrille....@gmail.com on 6 Sep 2014 at 6:27

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Ok, this is not a gmail-backup issue. The error message is due to google 
security policy. To be able to login from another application than gmail, you 
must make your google account less secured, at least during the backup ;).

Have a look to your account security page : 
https://www.google.com/settings/security and clic on the settings button in 
front of "Access for less secure apps", then Enable the radio button. Et voila 
;) you can now login from the gmail-backup application and so, backup your 
mails 

Original comment by cyrille....@gmail.com on 8 Sep 2014 at 5:17

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Thank you that worked!!! Didn't realize that was there.

Len

-- 
*: 1       Oh give thanks to the LORD, for he is good, *
*   for his steadfast love endures forever! *
*  2       Let the redeemed of the LORD say so, *
*   whom he has redeemed from trouble. *
*  43       Whoever is wise, let him attend to these things;    let them
consider the steadfast love of the LORD.*
                                                      Psalms 107:1-2;43
(ESV)

Original comment by lensta...@gmail.com on 11 Sep 2014 at 2:02

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cyrille...you are right!!...i went to https://www.google.com/settings/security 
page and 'enabled' Access for less secure apps...now it is creating a backup

Original comment by vnxswap...@gmail.com on 7 Oct 2014 at 5:10

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I am using GMail Backup revision 691 (2009-02-20)

Whenever i am trying to restore to a different gmail account 
it has following error
GMail Backup revision 691 (2009-02-20)
Restoring the content of account sjfalternate2011@gmail.com from D:\Gmail Backup
Error: IMAP: [AUTHENTICATIONFAILED] Invalid credentials (Failure)

please help

Original comment by sjfalter...@gmail.com on 10 Oct 2014 at 5:41

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Thank you Cyrille!  Really helped!  Wish I had found your answer about 2 hours 
ago!

Original comment by LettyLet...@gmail.com on 10 Nov 2014 at 11:31

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#6 cyrille....@gmail.com

thanks man!!! jobs done

Original comment by gpicusto...@gmail.com on 2 Dec 2014 at 8:27

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thanks cyrille 

Original comment by badrinat...@gmail.com on 22 Feb 2015 at 10:28

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thank you

Original comment by tri.mahe...@gmail.com on 18 Mar 2015 at 12:31

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I have 2-factor auth on my Google account so needed to generate an application 
specific password for this to work

Original comment by agilchri...@gmail.com on 7 Apr 2015 at 10:52

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merciii cyrille

Original comment by fenina.a...@gmail.com on 30 Apr 2015 at 11:00

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Error: IMAP: [AUTHENTICATIONFAILED] Invalid credentials (Failure)

Original comment by beautywa...@gmail.com on 28 May 2015 at 9:36

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Thanks cyrille, that's the link: 

https://www.google.com/settings/security/lesssecureapps

Original comment by crisbil...@gmail.com on 1 Jun 2015 at 11:18

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Cyrille   Hermano muchas gracias su respuesta fue muy puntual y de gran ayuda..

Original comment by emerjohn...@gmail.com on 24 Jun 2015 at 6:14