Exchange 2010 owa erro

Error 443 not initializing error when trying to log into owa
Wendolyn KingAsked:
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viktor grantExchange ServersCommented:
Hi Wendolyn,

Try to connect with the following url in Exchange Server: https://localhost/owa

Do you have the same erro?

Cheers
Viktor
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Wendolyn KingAuthor Commented:
Same error
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MASEE Solution Guide - Technical Dept HeadCommented:
Hi Wendolyn King,
Welcome to Experts Exchange.
Please try to reset OWA virtual directories.
http://exchange.sembee.info/2010/cas/reset-virtualdirectory.asp
If that doesn't work.
Uninstall CAS role and restart the server and install again. You need Exchange media to reinstall.
get-ClientAccessServer  | fl identity,autodiscoverserviceinternaluri
get-webservicesvirtualdirectory | fl identity,internalurl,externalurl
get-oabvirtualdirectory | fl identity,internalurl,externalurl
get-owavirtualdirectory | fl server,internalurl,externalurl,DefaultDomain
get-ecpvirtualdirectory | fl server,internalurl,externalurl,DefaultDomain
get-ActiveSyncVirtualDirectory | fl server,internalurl,externalurl
Get-outlookanywhere | fl server,ExternalHostname,ClientAuthenticationMethod,IISAuthenticationMethods

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Get these results before removing CAS role.
You have to configure configure the same using "Set" instead of "Get"
You can set all at once using this.
https://social.technet.microsoft.com/wiki/contents/articles/5163.managing-exchange-2010-externalinternal-url-s-via-powershell.aspx 
Check this for DNS setup and other errors if any.
https://www.experts-exchange.com/articles/29657/Exchange-2010-Fix-for-an-Invalid-certificate-and-related-issues.html
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Vidit BhardwajAdminCommented:
If you login to the mailbox using localhot/owa what do you see in IIS logs on the server.

In Exchange 2010 you can check the IIS logs , look for the account which you are trying to access in the recent logs, see what entries you get and share the error code if possible.

Also check if the OWA app pool is running or not, you have proper IIS bindings for the default website in IIS or not.
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MASEE Solution Guide - Technical Dept HeadCommented:
Enough information to confirm answer.
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