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This tends to happen when your Exchange server has been running for a long time or you have some strange message patterns coming into your Exchange server. The fix is to increase the maximum amount of named properties on your server. Note that this will only be a temporary fix as the issue will most likely occur again down the track.<br />
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Navigate to <b>HKEY_LOCAL_MACHINE\SYSTEM\<wbr />CurrentCon<wbr />trolSet\Se<wbr />rvices\MSE<wbr />xchangeIS\<wbr />&lt;Server Name&gt;\Private-00000000-000<wbr />0-0000-000<wbr />0-00000000<wbr /></b> in Registry Editor then increase the <b>NonMAPI Named Props Quota</b> value to <b>16384</b>, then dismount and remount the store.<br />
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I would suggest you look at creating two new Storage Groups and then splitting up your mailboxes between these two new stores otherwise you will run into this same issue down the track.
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This tends to happen when your Exchange server has been running for a long time or you have some strange message patterns coming into your Exchange server. The fix is to increase the maximum amount of named properties on your server. Note that this will only be a temporary fix as the issue will most likely occur again down the track.

Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\Private-00000000-0000-0000-0000-00000000 in Registry Editor then increase the NonMAPI Named Props Quota value to 16384, then dismount and remount the store.

I would suggest you look at creating two new Storage Groups and then splitting up your mailboxes between these two new stores otherwise you will run into this same issue down the track.

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I'm start getting this error &nbsp;any idea how fix it?<br />
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Failed to create a new named property for database &quot;First Storage Group\Mailbox Database&quot; because the number of named properties reached the quota limit (8192).<br />
&nbsp;User attempting to create the named property: &quot;AZZULESBS$&quot;<br />
&nbsp;Named property GUID: 00020386-0000-0000-c000-00<wbr />0000000046<wbr /><br />
&nbsp;Named property name/id: &quot;soundci&quot;
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I'm start getting this error  any idea how fix it?

Failed to create a new named property for database "First Storage Group\Mailbox Database" because the number of named properties reached the quota limit (8192).
 User attempting to create the named property: "AZZULESBS$"
 Named property GUID: 00020386-0000-0000-c000-000000000046
 Named property name/id: "soundci"

Exchange 2007 Error First Storage Group\Mailbox Database

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).