Bug 78038

3.4.1 is quite old and has been no more officialy supported for some time.

Could you try this?
- uninstall LO 3.4.1
- rename (or delete if you've got nothing to backup) your LO directory profile (see https://wiki.documentfoundation.org/UserProfile#Windows)
- clean your Windows registry with a free tool (eg ccleaner)
- download recent LO version from official website (http://www.libreoffice.org/download/libreoffice-fresh/)
- install the downloaded version

Julien, thanks for your contact.
Where i could find the registry cleaner you told?
From: bugzilla-daemon@freedesktop.org
To: carlsilva@hotmail.com
Subject: [Bug 78038] Installation
Date: Mon, 28 Apr 2014 17:53:33 +0000


    
      
    
     Julien Nabet
 changed
              bug 78038
        

             
          
            What
            Removed
            Added
          

         
           Status
           UNCONFIRMED
           
           NEEDINFO
           
         

         
           CC
           
                
           
           serval2412@yahoo.fr
           
         

         
           Ever confirmed
           
                
           
           1
           
         
      
        

            Comment # 1
              on bug 78038
              from  Julien Nabet

        3.4.1 is quite old and has been no more officialy supported for some time.

Could you try this?
- uninstall LO 3.4.1
- rename (or delete if you've got nothing to backup) your LO directory profile
(see https://wiki.documentfoundation.org/UserProfile#Windows)
- clean your Windows registry with a free tool (eg ccleaner)
- download recent LO version from official website
(http://www.libreoffice.org/download/libreoffice-fresh/)
- install the downloaded version
        
      

      
      You are receiving this mail because:
      
      
          You reported the bug.

Please don't answer directly from your emailer but from this link:
https://bugs.freedesktop.org/show_bug.cgi?id=78038#

To answer your question, here's the link:
https://www.piriform.com/ccleaner/download/standard

Dear Bug Submitter,

This bug has been in NEEDINFO status with no change for at least 6 months. Please provide the requested information as soon as possible and mark the bug as UNCONFIRMED. Due to regular bug tracker maintenance, if the bug is still in NEEDINFO status with no change in 30 days the QA team will close the bug as INVALID due to lack of needed information.

For more information about our NEEDINFO policy please read the wiki located here: 
https://wiki.documentfoundation.org/QA/FDO/NEEDINFO

If you have already provided the requested information, please mark the bug as UNCONFIRMED so that the QA team knows that the bug is ready to be confirmed.


Thank you for helping us make LibreOffice even better for everyone!


Warm Regards,
QA Team

Dear Bug Submitter,

Please read this message in its entirety before proceeding.

Your bug report is being closed as INVALID due to inactivity and a lack of information which is needed in order to accurately reproduce and confirm the problem. We encourage you to retest your bug against the latest release. If the issue is still present in the latest stable release, we need the following information (please ignore any that you've already provided):

a) Provide details of your system including your operating system and the latest version of LibreOffice that you have confirmed the bug to be present

b) Provide easy to reproduce steps – the simpler the better

c) Provide any test case(s) which will help us confirm the problem

d) Provide screenshots of the problem if you think it might help

e) Read all comments and provide any requested information

Once all of this is done, please set the bug back to UNCONFIRMED and we will attempt to reproduce the issue. 
Please do not:
a) respond via email 
b) update the version field in the bug or any of the other details on the top section of FDO