Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

error application has failed to start because plds4.dll keeps popping up - how do I fix it?

  • 2 (ردّان اثنان)
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه cor-el

DarcyK
DarcyK
more options

I'm trying to open Firefox & this error keeps popping up:

"error application has failed to start because plds4.dll"

I've tried reboot the computer but that has not helped.

I'm trying to open Firefox & this error keeps popping up: "error application has failed to start because plds4.dll" I've tried reboot the computer but that has not helped.

All Replies (2)

philipp
philipp
  • Moderator
more options

hello darcyK, please try to reinstall firefox:

  • download the full firefox setup file from getfirefox.com
  • uninstall firefox on the machine (but don't chose to delete your custom files & settings in the uninstaller)
  • manually delete all remaining files in the firefox program folder, which usually resides in C:\Program Files\Mozilla Firefox\
  • reinstall firefox
cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can also try to run Firefox once as Administrator or reboot the computer and login as Administrator to see if that helps.