Error on Outlook Web Access (Exchange 2010) - Can't view emails with attachments

Hi experts,

We have exchange server 2010 (no SP) and Domain controller (Windows server Enterprise R2 no SP) in the same machine.
On OWA for all the mailboxes that were created in the parent exchange server we cannot view anymore the emails that have attachments. This happen after migration to virtual.

This is the OWA error for the emails with attachments: “An unexpected error occurred and your request couldn't be handled.”

Request
Url: https://MYSERVER:443/owa/forms/premium/ReadConversation.aspx?ae=Item&a=Preview&t=IPM.Conversation&id=CID.q2eXlPeCRR6EgmdC%2bGRl5A%3d%3d.LgAAtAbxXgMqZCS6JCsL954AQAK4x0Z9O9FSo67pC8cGAAAAAADFAAAB.AQAAAAAAAEAAAAA8%2feFAAAAAA%3d
User host address: XX.XX.XX.XX
User: requests
EX Address: /o=MyOrg/ou=Exchange Administrative Group (FYDIBOHF25SPDLT)/cn=Recipients/cn=requests
SMTP Address: requests@MyOrg.com
OWA version: 14.0.722.0
Mailbox server: Server.exch.local
Exception
Exception type: System.IO.FileNotFoundException
Exception message: Retrieving the COM class factory for component with CLSID {78E40D5F-0C51-45B6-AC87-72119EC6669A} failed due to the following error: 8007007e.

Call stack
-      System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck)
-      System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache)
-      System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache)
-      System.Activator.CreateInstance(Type type, Boolean nonPublic)
-      Microsoft.Exchange.Security.RightsManagement.Protectors.ProtectorsManager.LoadProtectors()
-      Microsoft.Exchange.Security.RightsManagement.Protectors.ProtectorsManager.get_Instance()
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.AttachmentWell.RenderAttachments(TextWriter output, AttachmentWellType wellType, ArrayList attachmentList, UserContext userContext, Boolean isConversationAndIrmCopyRestricted)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.AttachmentWell.RenderAttachmentWell(TextWriter output, AttachmentWellType wellType, ArrayList attachmentList, UserContext userContext, Boolean renderEmptyWell, Boolean isConversationAndIrmCopyRestricted)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.AttachmentWell.RenderAttachmentWell(TextWriter output, AttachmentWellType wellType, ArrayList attachmentList, UserContext userContext, Boolean isConversationAndIrmCopyRestricted)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemPartWriter.ExpandedItemPartWriter.RenderAttachmentWell(Boolean shouldRenderAttachmentWell, ArrayList attachmentWellRenderObjects, Boolean isIrmCopyRestricted)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemPartWriter.ExpandedItemPartWriter.RenderWells(Boolean shouldRenderAttachmentWell, ArrayList attachmentWellRenderObjects)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemPartWriter.ExpandedItemPartWriter.Render(Boolean isVisible, Boolean isSelected)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemPartWriter.RenderExpandedItemPart(Boolean isVisible, Boolean isSelected)
-      Microsoft.Exchange.Clients.Owa.Premium.Controls.ItemPartWriter.Render(String elementId, Boolean isExpanded, Boolean isBranched, Boolean isSelected)
-      Microsoft.Exchange.Clients.Owa.Premium.ConversationUtilities.RenderItemParts(TextWriter writer, UserContext userContext, OwaStoreObjectId owaConversationId, Conversation conversation, OwaStoreObjectId[] expandedIds, Int32[] expandedInternetMIds, List`1 localItemIds, String searchWords, Boolean shouldRenderSelected)
-      Microsoft.Exchange.Clients.Owa.Premium.ReadConversation.RenderItemParts()
-      ASP.forms_premium_readconversation_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer)
-      System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
-      System.Web.UI.Page.Render(HtmlTextWriter writer)
-      System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)


I suspect to be from the Webserver (IIS) since the outlook clients has no issues.

Thank everyone in advance.
cristianezfxAsked:
Who is Participating?
 
cristianezfxConnect With a Mentor Author Commented:
Hi guys,
Just to let you know.
After upgrading the server to SP1 + all roll-up updates the problem persist. So, I installed a new mailbox server and migrate everything on that and then demote it.
Thank You,
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Your verymuch out of updates and what is the RU and Patches installed not sure if something messed this up ..... wo why not upgrade to SP2 directly to check

- Rancy
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cristianezfxAuthor Commented:
I know and you are 100% right.
But, before the updates I need to solve this. After updates I might have the same issue or even worse. there were no issue with emails that have attachmens  before the migration on OWA.
Thank you.
0
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Can you check with Text or others and just check its not an issue due to size or some specific attachment type

- Rancy
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cristianezfxAuthor Commented:
It happnes with any file extension. there is no speak about size. I checked already.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
So let start this .....

How many domains ?
Where do we have the Exchange ?
Can you view attachments if you open OWA on the CAS server ?

- Rancy
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cristianezfxAuthor Commented:
I have 2 DC's on parent domain and 4 child domains. but the issue is on the exchange installed on the same machine with first domain controller on parent domain only. I can;t view the entire emails that have atachements. The error is the one I post it.
thanks.
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
So your saying user be in any of the 5 Domains cant view attachments ?

- Rancy
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cristianezfxAuthor Commented:
yes, for any users who have the mailbox on this exchange server !
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
What if you try to open OWA using IIS for Admin mailbox can he ?
Run EXBPA from the toolbox and check any issues reported

- Rancy
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cristianezfxAuthor Commented:
Hi,
I checked EXBPA for all the baseline, connectivity etc. all Completed succesfully.
the admin account has been disabled and renamed from the time we install the servers long time ago. But the user that have same permissions like admin has the same issue. Can open any email except the emails with attachements.
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cristianezfxAuthor Commented:
no other explanation founded. I choose to install a new server and migrate.
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