2018年8月12日 · Hello supporters I've restart my pc then run firefox and it show up message Couldn't load XPCOM I've uninstalled it many times Then delete all file from my pc belongs to firefox And the problem still exist I've deleted from roaming, local, programs files, register And still same problem I've used software for complete uninstallation for firefox ...

2012年12月5日 · I had the same problem. I think it has to do with the folder where Mozilla writes and searchs for XPCOM.dll. The solution is quite simple: When the instalator ask you for the folder you enter C:\Program Files\Mozilla Firefox\ instead of …

2013年7月16日 · I had the same problem. Did a bunch of Windows Vista updates on about 8/16/13. After restarting etc, whenever I tried to start Firefox, I got "Couldn't load XPCOM" and no browser. Also my Windows appearance and colors and …

2014年11月4日 · Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

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2013年9月26日 · I had the same problem . My IE still worked so I Googled XPCOM. Good thing I did not buy the registry cleaning software offered. Then I found our about this forum. I got into C:\Program Files\Mozilla Maintenance Service and did clicked on UNINSTALL then downloaded a new Firefox with my IE .

2020年10月13日 · couldn't load XPCOM; Couldn't load XPCOM. Firefox does not work - Common fixes to get you back up and running; Server Not Found - Troubleshoot connection problems; How to troubleshoot time related errors on secure websites

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2015年11月7日 · Hi, this problem can often be solved by performing a Clean reinstall.This means you remove your Firefox program files and then reinstall Firefox.

2016年9月27日 · Olá Janaina! Faça o download do Firefox aqui e realize a instalação. O instalador irá atualizar seus arquivos e é bem provável que não ocorrerá mais esse erro.