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Speed Up, Fix and Protect Your PC Step By Step Guide
10 Easy simple steps that will help you speed up your computer, fix any PC errors and protect your PC from internet threats. A must for every computer user.

How To Fix Outlook Unknown Error

Of all of the errors one might encounter while using Outlook Express, the “unknown error” can be the most baffling. This error manifests itself in several ways. Some of the most common are:

  • A “Can’t move item” error. This usually occurs when trying to move a message to the Deleted Items folder.
  • A “Cycle redundancy check” error when trying to copy an item or email.
  • Inability to delete items from a certain time period and earlier—for example, not being able to delete messages received up to January 1, 2008. Usually in this case you can delete other items without problems.
  • When pressing ‘Shift’+'Delete’ to permanently delete an item without sending it to the Deleted Items folder at all, an “Unknown error” message.

So what causes the outlook express unknown error? One or more of the Outlook Express files crucial to its structure have become corrupted. This can be due to viruses or adware, a cluttered registry, or an incomplete installation. There have been various tactics tried to rid users of the “unknown error”, but it is not always correctable. There are some steps that you can try however, before resorting to uninstalling and then reinstalling the entire program.

  • Simply restart the program. Sometimes, this can clear up the issue.
  • Restart the computer. For some reason, this fixes a lot of problems you could be experiencing.
  • Update Windows to the latest service pack available for your particular operating system. Windows updates contain a lot of important bug fixes, as well as increased security.
  • Obtain a paid registry cleaning software to remove clutter from the registry.
  • Defragment your hard drive, either with the tool provided by Windows or a third party defragger.
  • Obtain and run antivirus software.

If none of the above steps remedied your problem, you may have to resort to uninstalling Outlook Express completely, and then reinstalling the software from your discs.

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6 Responses to “How To Fix Outlook Unknown Error”

  1. Dr. Reg says:
    Oulook is not a very stable program and thats why the unknown error occurs, a registry cleaner is probably the only thing that can fix that as that is the only software which touches the core of outlook.
  2. JackieMe says:
    Ahhhh, used ErrorSmart and it fixed this outlook unknown error which I was recieving every time I tried to open outlook.
  3. admin says:
    Great, it is good to see that ths article helps people to solve their outlook express unknown error.
  4. perry says:
    I did windows update and it fixed this outlook express unknown error.
  5. Troncho says:
    I have outlook express and when I open it it says it can’t find the PST file, after I click OK, the mailbox seems empty, what shoulf I do here?
  6. solidad says:
    i just noticed this website has almost all of the articles i needed when it comes to pc errors hehehe

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