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What version of Outlook are they using<br />
<br />
Check that they have the latest SP installed for office<br />
2010<br />
<a href="http://support.microsoft.com/kb/2460049" rel="ugc">http://support.microsoft.com/kb/2460049</a><br />
<br />
2007<br />
<a href="http://www.microsoft.com/en-us/download/details.aspx?id=27838" rel="ugc">http://www.microsoft.com/en-us/download/details.aspx?id=27838</a>
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What version of Outlook are they using

Check that they have the latest SP installed for office
2010
http://support.microsoft.com/kb/2460049 [http://support.microsoft.com/kb/2460049]

2007
http://www.microsoft.com/en-us/download/details.aspx?id=27838 [http://www.microsoft.com/en-us/download/details.aspx?id=27838]

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Hi,<br />
<br />
yes SP1 is installed on all the clients<br />
<br />
thanks<br />
keiron
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Hi,

yes SP1 is installed on all the clients

thanks
keiron

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OOF Not working for some users<br />
The error on the client is that the server is unavailable.<br />
all users are able to set via OWA but there are a few users that are unable to set the out of office via oulook and recive the error above<br />
thanks for help in advance <br />
keiron
</div>
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OOF Not working for some users
The error on the client is that the server is unavailable.
all users are able to set via OWA but there are a few users that are unable to set the out of office via oulook and recive the error above
thanks for help in advance 
keiron

out of office (OOF) Not working for some users

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.