Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

what is virtual memory? My computer keeps on saying the virtual memory is low and this slows down the speed of my computer.

  • 1 reply
  • 5 have this problem
  • 14 views
  • Last reply by cor-el

more options

It says, "the virtual memory is low and during this time some documents will take time to open"

It says, "the virtual memory is low and during this time some documents will take time to open"

All Replies (1)

more options

Physical memory is the memory that is installed on your computer as real memory. To be able to run programs that require more memory and more programs at the same time (via time sharing and task switching) it is also possible to move (swap) currently not needed code and data to disk to make room for other programs and data. The total memory available for programs is the Virtual Memory.

You can check the Virtual Memory settings here: Control Panel > System > Advanced > Performance > Settings (Advanced tab)
Windows can manage more memory then is physical available and that memory is stored in a page file on your hard drive.
If the size of that file is not large enough and all available memory is in use then you get the Virtual Memory is low warning.
Make sure that you have at least 1 GB or the recommended setting for the Virtual Memory.