有时Acrobat Reader DC无法打开PDF文件并显示以下错误消息 – Adobe Acrobat Reader 无法打开 PDF，因为它不是受支持的文件类型或文件已损坏^{(Adobe Acrobat Reader could not open PDF because it is either not a supported file type or because the file has been damaged)}。最常见于经常使用Microsoft print to PDF将文档转换为 pdf 的用户。看看你能做些什么来快速解决问题。

Adobe Acrobat Reader 无法打开 PDF

Adobe Acrobat Reader无法打开PDF

早些时候，Acrobat产品不检查 % PDF-header之前存在的无关字节。因此，只要 % PDF-header在文件的前 1024 个字节内开始，它就可以打开PDF文件。^(PDF)然而，现在事情的计划发生了变化。最新更新通过执行更严格的PDF-header^(PDF-header)解析提高了安全性。因此，将阻止打开未正确以“% PDF -”标题开头的PDF ^(PDFs)，^(PDF)并且您会看到如上所述的错误消息。

要消除此错误并正常打开文件，您可以修改PDF的生成方式，确保文件开头的% PDF之前没有多余的字节。^(PDF)

Win+R启动“运行”^(Run)对话框。

Regedit在框的空白字段中输入，然后按Enter。

AV 通用键

当注册表编辑器^{(Registry Editor)}打开时，导航到以下路径地址 -

HKCU\Software\Adobe\(product name)\(version)\ AVGeneral key

如果密钥不存在，请手动创建。

切换到右窗格。

创建一个新的 DWORD 值 - bValidateBytesBeforeHeader。

双字值

将其值设置为0。

关闭并退出注册表编辑器。

相关阅读^{(Related read)}：Adobe Reader 无法^{(Adobe Reader not working)}在 Windows 10 中运行。

再次尝试打开您的PDF文件。它应该可以正常加载。如果没有，您可以使用Edge或任何其他替代的免费 PDF 阅读器。

Hope that helps!

Adobe Acrobat Reader could not open PDF files in Windows

There are times when Acrobat Reader DC fails to open a PDF file and displays the following error meѕsage – Adobe Acrobat Reader could not open PDF because it is either not a supported file type or because the file has been damaged. It is mostly seen with users who frequently convert documents to pdf by using Microsoft print to PDF. See what you can do to fix the problem, quickly.

Adobe Acrobat Reader could not open PDF

Earlier, Acrobat products performed no checks on the extraneous bytes present before the %PDF-header. As such, it could open a PDF file as long as the %PDF-header started within the first 1024 bytes of the file. There’s however, a change in the scheme of things now. The latest updates have improved security by enforcing stricter parsing of the PDF-header. So, PDFs that do not correctly start with the ‘%PDF-‘ header are prevented from opening and you see the error message as described above.

To remove this error and open the file normally, you can modify the way the PDF is produced, making sure that no extraneous bytes appear before %PDF at the head of the file.

Launch the Run dialog box by pressing Win+R in combination.

Type Regedit in the empty field of the box and press Enter.

AV General Key

When the Registry Editor opens, navigate to the following path address –

HKCU\Software\Adobe\(product name)\(version)\ AVGeneral key

If the key does not exist, create it manually.

Switch to the right-pane.

Create a new DWORD value – bValidateBytesBeforeHeader.

DWORD Value

Set its value to 0.

Close and Exit the Registry Editor.

Related read: Adobe Reader not working in Windows 10.

Try opening your PDF file again. It should load normally. If it does not, you may use Edge or any other alternative free PDF Reader.

Hope that helps!

飞邱

About the author

我是一名 Windows 专家，在软件行业工作了 10 多年。我有使用 Microsoft Windows 和 Apple Macintosh 系统的经验。我的技能包括：窗口管理、计算机硬件和声音、应用程序开发等等。我是一位经验丰富的顾问，可以帮助您充分利用 Windows 系统。

Adobe Acrobat Reader 无法在 Windows 中打开 PDF 文件

Adobe Acrobat Reader无法打开PDF

Adobe Acrobat Reader could not open PDF files in Windows