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You probably need to run SCANPST to rebuild the Outlook data file (PST).<br />
Search your C drive to find it.<br />
What version of Outlook?<br />
What version of Windows?
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Windows 10, Outlook 2016, have run SCANPST a couple of times to no avail.
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How is the account setup? (IMAP, POP, or Exchange)
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Did you try fallow this tutorial ?<br />
<br />
<a href="https://lookeen.com/blog/how-to-fix-outlook-2016-search-problems" rel="ugc">https://lookeen.com/blog/how-to-fix-outlook-2016-search-problems</a><br />
<br />
It looks like there is a lot of advice's about fixing search folder in Outlook 2016
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Excellent point! I had not done my archives - which are substantial, but after having ran SCANPST on all PST's, I still get this error when I select any of the search folders (All Mail, Larger Than 100 DB, Unread Mail, Sent Directly to Me, etc.)
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After running SCANPST on all of my PST files, I now get the message (just below the search input area) that says &quot;Something went wrong and your search couldn't be completed.&quot; however, my searches DO seem to be working normally apart from this annoying message with a yellow exclamation triangle.
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After much searching, I found I could delete the search folders and re-create them solving this issue.
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I tried starting Outlook in Safe mode and with the /Cleanfinders option, but neither worked. I found the following 823127 &nbsp;reference in a Microsoft support page (<a href="https://support.microsoft.com/en-us/help/831402/how-to-troubleshoot-search-folders-in-outlook-2010,-outlook-2007,-and-outlook-2003" rel="ugc">https://support.microsoft.com/en-us/help/831402/how-to-troubleshoot-search-folders-in-outlook-2010,-outlook-2007,-and-outlook-2003</a>) but it is a broken link.<br />
<br />
823127 &quot;The operation failed&quot; error message when you click a Search Folder<br />
<br />
the 823127 is a link ( <a href="https://support.microsoft.com/en-us/help/823127" rel="ugc nofollow">https://support.microsoft.com/en-us/help/823127</a>&nbsp;) but the page is not found.<br />
<br />
TIA
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I tried starting Outlook in Safe mode and with the /Cleanfinders option, but neither worked. I found the following 823127  reference in a Microsoft support page (https://support.microsoft.com/en-us/help/831402/how-to-troubleshoot-search-folders-in-outlook-2010,-outlook-2007,-and-outlook-2003) but it is a broken link.

823127 "The operation failed" error message when you click a Search Folder

the 823127 is a link ( https://support.microsoft.com/en-us/help/823127 ) but the page is not found.

TIA

Clicking an Outlook (local Postoffice) Search Folder gives &quot;The attempted operation failed. An object could not be found.&quot;

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

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

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.

Clicking an Outlook (local Postoffice) Search Folder gives &quot;The attempted operation failed. An object could not be found.&quot;

Clicking an Outlook (local Postoffice) Search Folder gives "The attempted operation failed. An object could not be found."