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How to repair the “This file cannot be viewed” error in PDF Preview Handler? Registry problem: Registry problems can cause countless errors on your computer, and the PDF Preview Handler error is one of the errors that can occur when the registry is corrupted.This scenario occurs when previewing PDF files in Outlook. Adobe Reader is not installed as the default PDF viewer: If the default PDF viewer is not installed as the default PDF editing application and at the same time PDF thumbnail preview is not enabled, this error is likely to occur.The Adobe EULA must be accepted before you can view files externally. The EULA has not been accepted in Adobe Reader: Another reason for this error is a new installation of Adobe Reader that has never been opened before.Enabling Internet Autodetection: There is a setting called “Internet Autodetection”, and if it is enabled, it can cause this PDF Preview Handler error.What causes the “This file cannot be viewed” error in the PDF preview manager? Why does it say the file can't be previewed?.How do I fix the preview error in PDF manager?.Make sure that the “PDF Preview Processor” is enabled.Install the latest version of Adobe Reader.

How to repair the “This file cannot be viewed” error in PDF Preview Handler?.

What causes the “This file cannot be viewed” error in the PDF preview manager?.

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