Search Support

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

After upgrade to 9.01 startup of firefox gives error message MOZCRT19.dll was not found

  • 3 replies
  • 2 have this problem
  • 1 view
  • Last reply by cor-el

more options

After the upgrade to firefox 9.01 with windows xp I get every time firefox tries to launch the error message "This application has failed to start because MOZCRT19.dll was not found. Re-installing the application may fix this problem".

Well, re-installing does not fix this problem!

I even de-installed firefox, cleared all folders with the hint of mozilla or firefox in its name and did the same with the registry, re-installed firefox 9.01 but always get the same result.

After the upgrade to firefox 9.01 with windows xp I get every time firefox tries to launch the error message "This application has failed to start because MOZCRT19.dll was not found. Re-installing the application may fix this problem". Well, re-installing does not fix this problem! I even de-installed firefox, cleared all folders with the hint of mozilla or firefox in its name and did the same with the registry, re-installed firefox 9.01 but always get the same result.

Chosen solution

If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.

See this for a similar issue caused by ZoneAlarm:

Read this answer in context 👍 0

All Replies (3)

more options

Which security software (firewall, anti-virus) do you have?

more options

I do run ZoneAlarm version 10.0.241.000 which comes with Anti-Virus/Spam/Spam/Phishing/Spyware

more options

Chosen Solution

If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.

See this for a similar issue caused by ZoneAlarm: