This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

fsclm.dll shows up in crashing report, is this cause of new release

  • 2 replies
  • 22 have this problem
  • 2 views
  • Last reply by nabiye

more options

Suddenly lots of firefox crashes. Go to home page (google) once search and new sites to explore come up, anyone of those can cause crash. Most often firefox has to start new session.

Suddenly lots of firefox crashes. Go to home page (google) once search and new sites to explore come up, anyone of those can cause crash. Most often firefox has to start new session.

Chosen solution

fsclm.dll is part of the f-secure internet security/anti-virus application. I can not recall seeing any previous reports about this causing crashes.

Checking the extension list in your crash report I see that f-secure adds an extension to Firefox. Try disabling this extension to see if the extension is causing the crashes.

To do that open up the add-ons manager (in the menus select Tools > Add-ons), then in the add-ons manager select the Extensions panel. Now click on the f-secure extension to select it and click on the Disable button. Re-start Firefox and see if the crashes stop.

If this does stop the crashing you should consider asking f-secure support about this to see if they are aware of any issues with their product.

Read this answer in context 👍 0

All Replies (2)

more options

Chosen Solution

fsclm.dll is part of the f-secure internet security/anti-virus application. I can not recall seeing any previous reports about this causing crashes.

Checking the extension list in your crash report I see that f-secure adds an extension to Firefox. Try disabling this extension to see if the extension is causing the crashes.

To do that open up the add-ons manager (in the menus select Tools > Add-ons), then in the add-ons manager select the Extensions panel. Now click on the f-secure extension to select it and click on the Disable button. Re-start Firefox and see if the crashes stop.

If this does stop the crashing you should consider asking f-secure support about this to see if they are aware of any issues with their product.

more options

Hope you got my note, appreciate your prompt response. Have notified AVG to see if issue on their end.