如果您下载了压缩文件或RAR文件，并且在尝试打开它时遇到错误消息“存档格式未知或已损坏(The archive is either in unknown format or damaged)”，那么这篇文章旨在帮助您。在这篇文章中，我们将确定原因，并提供您可以尝试帮助您解决此问题的适当解决方案。
什么是存档格式未知或已损坏？
通常，ZIP或RAR档案用于在较少的空间和时间内下载、传输和备份大量文件。但是，与其他文件一样，ZIP文件也容易出现一些逻辑问题。由于RAR或压缩文件损坏，您可能会遇到此错误。zip 文件损坏的最常见原因是不正确/不完整的RAR存档下载、严重的病毒感染、CRC（循环冗余检查(Cyclic Redundancy Check)）错误。
存档损坏是什么意思？
下载过程中可能会出现损坏的存档。由于用于创建和操作文件的软件存在缺陷，可能会发生文件损坏。(File)因为这样的文件没有用 - 但你可以修复它们！
存档格式未知或已损坏
如果您遇到此存档格式未知或已损坏的(The archive is either in an unknown format or damaged) 问题，您可以尝试以下我们推荐的解决方案（不分先后顺序），看看这是否有助于解决问题。
- (Redownload)将压缩或RAR存档文件重新下载到其他位置
- 运行防病毒扫描
- 修复(Repair)压缩或RAR存档文件
让我们看一下关于列出的每个解决方案所涉及的过程的描述。
1]重新下载(Redownload)压缩或RAR存档文件
如果下载不完整或损坏，您可能会在尝试打开存档文件时收到错误消息。
此解决方案需要您将压缩或RAR存档文件重新下载到其他位置，然后查看问题是否会得到解决。如果没有，请继续下一个解决方案。
如果您仍然遇到此问题，则文件可能确实处于损坏状态，您可能需要通知网站所有者有关 i.
2]运行防病毒扫描
如果下载的 zip 或RAR存档文件包遭到破坏，当您尝试打开存档时，您可能会收到存档格式未知或损坏的错误消息。
此解决方案要求您使用Windows Defender 或任何有信誉 的第三方 AV 产品(third-party AV product)运行完整的系统防病毒扫描。如果问题仍未解决，您可以尝试下一个解决方案。
下载文件时禁用安全软件不是一个好主意。
3]修复(Repair)压缩或RAR存档文件
Zip或RAR文件具有明确定义的结构，因此容易损坏。即使在轻微损坏的情况下，提取工具也无法提取其内容，因为所有 zip 工具首先运行完整性检查，如果它们发现存档的原始文件的CRC值与提取的不匹配那些，他们不会工作。
在这种情况下，您可以尝试任何这些好的免费 zip 文件修复软件(free zip file repair software)，它可以帮助您修复和提取 zip 文件的内容。
Hope this helps!
Fix The archive is either in an unknown format or damaged error
If yоu downloaded a zipped or a RAR file and when you try to оpen it, you encounter the error meѕsage ‘The archive is either in unknown format or damaged‘, then this post is intended to help you. In this post, we will identify the cause, as well as offer the appropriate solutions you can try to help you remediate this issue.
What is the archive is either in unknown format or damaged?
Generally, ZIP or RAR archives are used to download, transfer, and a backup large number of files in less space and time. However, like other files, the ZIP file is also prone to some logical problems. You may encounter this error due to RAR or zipped file corruption. The most common reasons for zip file corruption are improper/incomplete RAR archive download, severe virus infection, CRC (Cyclic Redundancy Check) errors.
What does it mean when an archive is corrupted?
A corrupted archive can occur during the download process. File corruption may occur due to a defect in the software used to create and manipulate the file. As such files are of no use – but you can repair them!
The archive is either in an unknown format or damaged
If you’re faced with this The archive is either in an unknown format or damaged issue, you can try our recommended solutions below in no particular order and see if that helps to resolve the issue.
- Redownload the zipped or RAR archive file to a different location
- Run antivirus scan
- Repair the zipped or RAR archive file
Let’s take a look at the description of the process involved concerning each of the listed solutions.
1] Redownload the zipped or RAR archive file
If the download is incomplete to corrupted, you may receive the error message when you try to open the archive file.
This solution entails you redownload the zipped or RAR archive files to a different location and see if the issue will be resolved. If not, continue with the next solution.
If you still face this issue, maybe the file is genuinely in a damaged condition, and you may have to inform the site owner about i.
2] Run an antivirus scan
If the downloaded zipped or RAR archived file package is compromised, you may receive The archive is either in an unknown format or damaged error message when you try to open the archive.
This solution requires you to run a full system antivirus scan with Windows Defender or any reputable third-party AV product. If the issue is still unresolved, you can try the next solution.
Disabling your security software when downloading the file is not a good idea.
3] Repair the zipped or RAR archive file
Zip or RAR files have a well-defined structure and are therefore prone to corruption. Even in the case of minor corruption, the extraction tools will not be able to extract its content, since all zip tools first run a check for integrity and if they find that the CRC values of the original files of an archive do not match the extracted ones, they will not work.
In this case, you can try any of these good free zip file repair software that will help you to repair and extract the contents of the zip files.
Hope this helps!
