Close programs to prevent information loss
Well maybe some processes were running and this was causing low memory issues on my computer, as a result of which there was a performance loss and consequently this pop-up notification appeared. When this happens, your programs could well start responding slowly as well as face display problems. Such low memory problems occur can when your Windows 11 or Windows 10 computer runs out of RAM and becomes low on virtual memory. It can also occur if some of your closed programs are not releasing the memory, resulting in a memory leak. When this happens, to prevent programs from stopping, Windows notifies you that your computer is low on memory and that you need to close some programs or you may receive a Your system is low on virtual memory message. Sure, you should close some programs right away in order to avoid data loss, but you cannot do this all the time. The best thing to do then if you often see Close programs to prevent information loss message is to ensure that you have the Automatically manage paging file size for all drives setting enabled. This is the default setting, but you should confirm that this has not been changed. You will find it in the Control Panel > System Properties> Performance Settings button > Performance Options > Advanced tab > Change Virtual Memory button.
If this does not help and you face this issue often, you may want to consider installing more RAM or increasing the size of your Page File or Virtual Memory.