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In PrizmDoc, why do I fail to load/convert Excel documents with the error “Exception from HRESULT: 0x800AC472”?
The error message Exception from HRESULT: 0x800AC472 is usually associated with a failure involving an Excel document, found in the MsOfficeConverter.log. Below are some known triggers of it:
Exception from HRESULT: 0x800AC472
MsOfficeConverter.log
If the user is logged in as "SYSTEM", "LocalSystem", or any other non-user-account variant, this will cause PrizmDoc to fail when using MSO services. This is expected behavior when working with Microsoft Office documents in PrizmDoc. Please see step 6 of the Windows Installation documentation regarding this:
http://help.accusoft.com/PrizmDoc/latest/HTML/webframe.html#windows-installation.html
"Specify the login account (account name and password) that PrizmDoc Server will run under. If you are using the Microsoft Office (MSO) Conversion add-on, please make sure that the "login account" is a real user account with Administrator rights. Running PrizmDoc under the LocalSystem user or another Microsoft Windows integrated service account is not supported for this option."
It’s also crucial that the copy of Microsoft Office on the system has been activated. A not-licensed, not-activated, expired, or trial license will all cause Microsoft Office to not work with PrizmDoc.
More information: https://help.accusoft.com/PrizmDoc/latest/HTML/windows-requirements.html
"The installed copy of Microsoft Office must be activated in order for PrizmDoc’s Microsoft Office Conversion Service to work properly. Not licensed, not activated, an expired or trial version of Microsoft Office will not work with PrizmDoc."
Your default printer must be the Microsoft XPS Document Writer when working with Excel documents in PrizmDoc. Specifying another printer could possibly lead to this exception.
More information: http://help.accusoft.com/PrizmDoc/latest/HTML/natively-render-mso-documents.html
"The Microsoft Office Conversion Service requires the Microsoft XPS Document Writer printer driver to be installed for the best conversion performance and rendering fidelity of MS Excel documents"
Ensure the Print Spooler service is started and the Microsoft XPS Document Writer is the default printer.
There is a known issue with version 13.3 of PrizmDoc where completely blank Excel files are not loadable in the Viewer. They will fail to load and throw the aforementioned HRESULT exception. This has been fixed in PrizmDoc version 13.6.
HRESULT
In short, please set up the PrizmDoc service correctly to run with a real user account, ensure the copy of Microsoft Office has been activated, and make sure the default printer is set to "Microsoft XPS Document Writer", then restart the service. This should fix this particular issue in most cases.
For more reading on considerations that Microsoft recommends when running their client-side MSO applications on the server, see this article:
Considerations for server-side Automation of Office