# Windows xp does not accept the root certificate

**URL:** https://community.ciphermail.com/t/windows-xp-does-not-accept-the-root-certificate/31
**Category:** Gateway
**Created:** [July 15, 2009, 1:32pm UTC](https://community.ciphermail.com/t/windows-xp-does-not-accept-the-root-certificate/31 "2009-07-15T13:32:51Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Andreas\_Schubert](https://avatars.discourse-cdn.com/v4/letter/a/f4b2a3/32.png) [@Andreas\_Schubert](https://community.ciphermail.com/u/Andreas_Schubert)
#### Post date: [July 15, 2009, 1:32pm UTC](https://community.ciphermail.com/t/windows-xp-does-not-accept-the-root-certificate/31/1 "2009-07-15T13:32:51Z")

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hello,

now i have deleted all certificates from my windows machine and from djigzo.  
and created a new ca and user certificates.  
but with no success "the same procedure as last year"..... ☹

if i try to import the pfx file i will not get the security warning message (  
smime guide page 12, figure 8 ), but if i import it manually and select the  
store "trusted root certificates" i will get this message, but with no success.  
if i open the imported root certificate and go to the third tab i see the  
message "this certificate has a invalid signature" ( translated from german ).  
in thunderbird i can import this certificate with no problem

regards

Andreas Schubert

> **···**
>
> users-bounces(a)lists.djigzo.com wrote on 14.07.2009 19:53:40:
> 
> > Did you import the pfx by dbl click and then import using the import  
> > wizard? Could you remove all your root instances from all stores and  
> > try again? The easiest way to manage certificates on windows is by  
> > starting mmc and then add the certificates add-in. Using the mmc add-  
> > in you can search for a certificate by right clicking the top store  
> > element and then choose search for certificates. Search for your root  
> > and delete all references and try to import the pfx again
> 
> > Kind regards
> 
> > Martijn  
> > --- sent from Blackberry  
> > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_  
> > Users mailing list  
> > Users(a)lists.djigzo.com  
> > [http://lists.djigzo.com/lists/listinfo/users](http://lists.djigzo.com/lists/listinfo/users)