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Refer this<b><a href="https://sysinfotools.com/blog/solved-ms-outlook-error-0x8004010f-outlook-data-file-cannot-be-accessed/" rel="ugc"> blog</a></b> as it will help you to get rid of this issue. &nbsp;It is a 0x8004010F error which usually arises when users sends and recipes the messages,
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Refer this blog [https://sysinfotools.com/blog/solved-ms-outlook-error-0x8004010f-outlook-data-file-cannot-be-accessed/] as it will help you to get rid of this issue.  It is a 0x8004010F error which usually arises when users sends and recipes the messages,

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Thanks guys...we are attempting your suggestions and will be in touch asap.<br />
Mags
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Thanks guys...we are attempting your suggestions and will be in touch asap.
Mags

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Can you please follow up and close? &nbsp;Thanks.
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Can you please follow up and close?  Thanks.

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John I just received a forwarded email from my client so I believe she has taken care of things. I will select how the issue was resolved.<br />
Thanks,<br />
Mags
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John I just received a forwarded email from my client so I believe she has taken care of things. I will select how the issue was resolved.
Thanks,
Mags

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Absolutely! Thanks for your assistance!<br />
Mags
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Absolutely! Thanks for your assistance!
Mags

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Glad we could help.<br />
<br />
@OP, experts and future visitors:<br />
Please remember to endorse my, <b>or any other expert's comments</b> that you found helpful by clicking on the &quot;Thumb's Up&quot; button<br />
<br />
Read more on endorsements<br />
<a href="https://www.experts-exchange.com/discussions/218503/What-are-Endorsements.html" rel="ugc">https://www.experts-exchange.com/discussions/218503/What-are-Endorsements.html</a>
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Glad we could help.

@OP, experts and future visitors:
Please remember to endorse my, or any other expert's comments that you found helpful by clicking on the "Thumb's Up" button

Read more on endorsements
https://www.experts-exchange.com/discussions/218503/What-are-Endorsements.html [https://www.experts-exchange.com/discussions/218503/What-are-Endorsements.html]

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Happy to give you guys a Thumbs Up! Didn't see that before!<br />
Mags
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Happy to give you guys a Thumbs Up! Didn't see that before!
Mags

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I have a client who has Outlook 2016. When trying to forward a message she gets the message &quot;The operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook. This does not resolve the issue and Office 365 has just been reinstalled. She has Microsoft Exchange and Google Apps emails under her profile.<br />
Resolution?<br />
Thanks,<br />
Mags
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I have a client who has Outlook 2016. When trying to forward a message she gets the message "The operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook. This does not resolve the issue and Office 365 has just been reinstalled. She has Microsoft Exchange and Google Apps emails under her profile.
Resolution?
Thanks,
Mags

Outlook 2016 - Operation has failed

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

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

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Google Workspace is a suite of cloud computing productivity and collaboration software tools and software. It includes Google’s popular web applications including Gmail, Drive, Hangouts, Calendar, and Docs. While these products are available to consumers free of charge, Google Workspace adds business-specific features such as custom email addresses at your domain and storage for documents and email.