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thank you need help with new exchange 2007 and iis 7 setup. &nbsp;cannot login on the owa url. error 503 
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thank you need help with new exchange 2007 and iis 7 setup.  cannot login on the owa url. error 503

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Are you using <a href="https://servername/owa" rel="ugc">https://servername/owa</a>&nbsp;???<br />
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Are the mailboxes definately mounted, have a look in the Management Console???
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Are you using https://servername/owa [https://servername/owa] ???

Are the mailboxes definately mounted, have a look in the Management Console???

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yes user account is mounted
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yes the mailbox are mounted 
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Error: Unable to locate the open procedure &quot;OpenIPSecPerformanceData&quot;<wbr /> in DLL &quot;D:\Windows\System32\ipsec<wbr />svc.dll&quot; for the &quot;PolicyAgent&quot; service. Performance data for this service will not be available. The first four bytes (DWORD) of the Data section contains the error code.<br />
how do i correct this error
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Error: Unable to locate the open procedure "OpenIPSecPerformanceData" in DLL "D:\Windows\System32\ipsecsvc.dll" for the "PolicyAgent" service. Performance data for this service will not be available. The first four bytes (DWORD) of the Data section contains the error code.
how do i correct this error

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You have a configuration error. &nbsp;You may need to add D:\Windows\System32\ipsecs<wbr />vc.dll to the authorized list in IIS 7 configuration.
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You have a configuration error.  You may need to add D:\Windows\System32\ipsecsvc.dll to the authorized list in IIS 7 configuration.

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i have setup a new Server 2008 r2 and exchange 2007 r2. i cannot get owa to work i am using II3 7.<br />
i am receiving error 503. &nbsp;what can be causing the user to get this error when they try to access the owa &nbsp;site. &nbsp;they can get to the site but cannot logon?
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i have setup a new Server 2008 r2 and exchange 2007 r2. i cannot get owa to work i am using II3 7.
i am receiving error 503.  what can be causing the user to get this error when they try to access the owa  site.  they can get to the site but cannot logon?

senior system eng

Microsoft applications include a variety of software programs, including development and digital authoring programs (Expression and Media Center), educational programs, Internet software, including Essentials, Skype and the Live family, anti-virus, productivity applications and suites like Office, Excel, Word, Outlook, Access and PowerPoint, video games and server applications such as Exchange, SharePoint, IIS and Virtual Server.

Microsoft Applications

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.

Microsoft Legacy OS

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.