如题所述
1、首先打开火狐浏览器，然后点击一个要观看的视频，然后会出现请点击安装最新flash的提示，点击“请点击安装最新flash安装flash插件”按钮。
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2、点击完之后，会进入flash插件安装页面，然后点击立即安装按钮。
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3、然后在弹出的窗口中点击“保存文件”按钮将文件保存到本地。
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4、flash插件下载完成后，点击火狐浏览器右上角的下载按钮，然后双击flash插件打开安装。
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5、进入到安装页面后，然后一直点击下一步按钮，等待软件安装完成。
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6、安装完成后点击完成按钮完成安装。
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7、然后再重启浏览器，打开任意一个视频的播放页面，再点击运行AdobeFlash按钮。
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8、然后会在页面中弹出运行AdobeFlash的提示窗口，然后点击“允许”按钮允许即可，至此就安装完成了。
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/iknow-pic.cdn.bcebos.com/fcfaaf51f3deb48f39fe5b29fe1f3a292cf578b6"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/fcfaaf51f3deb48f39fe5b29fe1f3a292cf578b6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/fcfaaf51f3deb48f39fe5b29fe1f3a292cf578b6"/>
2、点击完之后，会进入flash插件安装页面，然后点击立即安装按钮。
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3、然后在弹出的窗口中点击“保存文件”按钮将文件保存到本地。
/iknow-pic.cdn.bcebos.com/bba1cd11728b47105008183bcdcec3fdfc032326"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/bba1cd11728b47105008183bcdcec3fdfc032326?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/bba1cd11728b47105008183bcdcec3fdfc032326"/>
4、flash插件下载完成后，点击火狐浏览器右上角的下载按钮，然后双击flash插件打开安装。
/iknow-pic.cdn.bcebos.com/c75c10385343fbf2361342d4be7eca8065388f0e"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/c75c10385343fbf2361342d4be7eca8065388f0e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/c75c10385343fbf2361342d4be7eca8065388f0e"/>
5、进入到安装页面后，然后一直点击下一步按钮，等待软件安装完成。
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6、安装完成后点击完成按钮完成安装。
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7、然后再重启浏览器，打开任意一个视频的播放页面，再点击运行AdobeFlash按钮。
/iknow-pic.cdn.bcebos.com/a1ec08fa513d26970d1bedaa5bfbb2fb4216d879"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/a1ec08fa513d26970d1bedaa5bfbb2fb4216d879?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/a1ec08fa513d26970d1bedaa5bfbb2fb4216d879"/>
8、然后会在页面中弹出运行AdobeFlash的提示窗口，然后点击“允许”按钮允许即可，至此就安装完成了。
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温馨提示：答案为网友推荐，仅供参考
第1个回答 2016-10-14
今天我们所讲的是firefox浏览器安装flash插件的适合老是提示失败，提示需要手动安装，但是手动安装也不行，
如果你的firefox浏览器安装了无数次flash都没用的话，请依照下边的方法操作。（操作前先关闭所有浏览器）
1、手动下载并安装flash插件（我知道你已经安装过很多次了，照做就是！）
2、在硬盘上找到如下目录：C:\Windows\System32\Macromed\Flash
3、找到这两个文件：flashplayer.xpt 和 NPSWF32_11_9_900_170.dll（这个文件后边的数字部分可以会有所不同）
4、把上边找到的两个文件，把它们复制到firefox浏览器安装目录的plugins文件夹下。安装版的firefox在这个位置：C:\Program Files\Mozilla Firefox\plugins；绿色版firefox直接在浏览器目录下搜索“plugins”就是了。本回答被网友采纳
如果你的firefox浏览器安装了无数次flash都没用的话，请依照下边的方法操作。（操作前先关闭所有浏览器）
1、手动下载并安装flash插件（我知道你已经安装过很多次了，照做就是！）
2、在硬盘上找到如下目录：C:\Windows\System32\Macromed\Flash
3、找到这两个文件：flashplayer.xpt 和 NPSWF32_11_9_900_170.dll（这个文件后边的数字部分可以会有所不同）
4、把上边找到的两个文件，把它们复制到firefox浏览器安装目录的plugins文件夹下。安装版的firefox在这个位置：C:\Program Files\Mozilla Firefox\plugins；绿色版firefox直接在浏览器目录下搜索“plugins”就是了。本回答被网友采纳
