my mozilla browser is slow suggested I check windows for viruses

Hello. Please be more specific. Is Mozilla lagging? Or is your connection slow? If Mozilla is lagging, then the problem is with your RAM/CPU/You have a virus.
Case 1: RAM
This occurs when you have too many programs opened and don't have sufficient ram to open all of them. If you have less than 3GB of ram, then it's explainable. You need more RAM
Case 2: CPU
This is the speed of your computer. If your system CPU has a speed under 2GHZ, then this could be the problem. You'll need to either:[*]Overclock your PC(Not recommended, as it reduces your fan power and other stuff, and it has high risks.[*]Get a new processor(This will only work if your processor is changable)[*]Get a whole new PC.(Recommended but costs money)
Case 3: Malware/Virus
This is something very common, you might have a virus on your pc slowing things down. Either:[*]Scan your PC with Windows Defender.[*]Scan your PC with a better antivirus, such as Kaspersky(Paid) or Avast!/Avira(Free)[*]If you don't have a virus, or no virus is detected, then is is either:

• You have an undetectable virus
• You don't have a virus.

Case 4: Slow Connection/Too many extensions.
This is if pages are loading too slowly. If they're loading too slowly, then you have a slow connection, or you have too many add-ins. Add-ins both slow down connectivity(If they have anything to do with it) and make Mozilla use up more RAM.


All in all, I hoped I helped you

petra9999 said:

I have Trend Micro but how can one tell if it is working?

Your browser suggested you check for viruses? That was not your browser - it wouldn't do that.
You might want to download and run ADWCleaner.

MoxieMomma said:

Hi, @petra9999:

As far as your hardware specs, if your system is robust enough to run Win10, it's probably robust enough to run Firefox.

Most Firefox problems originate in the user's profile.
While you could reset Firefox, as suggested by @Barneyrubble, you might want to try a few less drastic measures first.
They are outlined in these helpful tutorials:
Standard Diagnostic - Firefox
Fix slowness, crashing, error messages and other problems

Checking for adware and other junk, as @simrick suggested, is also a good idea. Those notifications you mention sound suspicious for adware/junkware or even bonafide malware. Without a screen shot, it's hard to say.

Please let us know how it goes.

Thanks,
MM

If he has under 3GB of ram, and firefox is lagging, then it's the most explainable reason. By default, Windows uses around 15% of your ram. So of 3GBs, 15% is 450MBs of RAM. Any other open programs, such as antivirus, skype, etc. will also increase the default usage of RAM if you start up with it. It doesn't seem like it's a problem with Mozilla, although it might be. I know this because I used to have a 3GB of ram PC, and Mozilla was worse than Assassin's Creed running on a Celeron (I am exaggerating a bit ).
Then again, it could be Mozilla and ram-eating addins

petra9999 said:

It's the Ram and CPU both below your recommended numbers of 2 GHZ and 3GB

Thank You For Your Advice

Glad I helped.

AbAppletic said:

If he has under 3GB of ram, and firefox is lagging, then it's the most explainable reason. By default, Windows uses around 15% of your ram. So of 3GBs, 15% is 450MBs of RAM. Any other open programs, such as antivirus, skype, etc. will also increase the default usage of RAM if you start up with it. It doesn't seem like it's a problem with Mozilla, although it might be. I know this because I used to have a 3GB of ram PC, and Mozilla was worse than Assassin's Creed running on a Celeron (I am exaggerating a bit ).
Then again, it could be Mozilla and ram-eating addins

Based on what I am seeing here, as well as my own personal experience, 3GB RAM is plenty to run W10 and should not affect Firefox adversely. A 2GHz processor is also above the minimum requirements.

Microsoft details Minimum Hardware requirements for Anniversary Update - Windows 10 Forums

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