Active Sync just working 1x, then Error Code 0x80072f7d

Have an Samsung Ommnia i900 with Windows Mobile 6.1 (and an Exchange 2003
with DynDNS)

My Active Sync is working since April this year.
But yesterday it stops

only syncing 1x, when switching OFF / ON the phone
Then next time it will get an 0x80072f7d error

I´ve recreated my sync profile, but nothing helps

any ideas?

best regards
Lutz

Hello,

This error is commonly caused by a root certificate issue between your
Windows Phone and your Exchange 2003 server. This is usually caused by the
certificate expiring, it being updated or being longer than 4096 bits.

Verify with your Exchange administrator if you need a new certificate or an
updated one.

Regards,

--
Clinton Fitch, MVP-Mobile Devices
http://www.clintonfitch.com

"Lutz Rahe" <> wrote in message
news:#k5A$...
> Have an Samsung Ommnia i900 with Windows Mobile 6.1 (and an Exchange 2003
> with DynDNS)
>
> My Active Sync is working since April this year.
> But yesterday it stops
>
> only syncing 1x, when switching OFF / ON the phone
> Then next time it will get an 0x80072f7d error
>
> I´ve recreated my sync profile, but nothing helps
>
> any ideas?
>
> best regards
> Lutz
>