Fix High Memory Usage on Windows 11 and Find What Uses Your RAM

First understand what the memory percentage means

Windows uses spare RAM for caching and may compress memory to avoid slower disk paging. Some use while “idle” is normal. Responsiveness, growth over time and the process list matter more than chasing the lowest percentage.

1. Find the apps and processes using memory

1. Press Ctrl + Shift + Esc.
2. On Processes, select the Memory column to sort highest first.
3. Expand browsers and grouped apps where possible.
4. Watch whether a process stays stable or continues growing.
5. Open Performance → Memory to view total RAM, available memory and speed.

Compare usage after a clean restart and again after opening your normal workload. Do not add the percentages shown for every process and expect them to equal the headline number exactly; Windows also accounts for the kernel, drivers, shared memory, compression and cache.

2. Close and repair memory-heavy applications

Save work and close the largest app normally. If memory falls and performance returns, test that app more carefully.

• Install its latest stable update from the publisher.
• Open a smaller project or file to see whether the workload itself is responsible.
• Disable third-party plug-ins or extensions in groups.
• Check for a built-in cache limit, history setting or project-index option.
• Restart an app whose memory usage grows without returning after its task finishes.

Use End task only when the application will not close and you accept losing unsaved work. Reinstalling is a later step and should not erase unsynchronised profiles, game saves or project settings.

3. Control browser tabs, extensions and web apps

Modern browsers isolate tabs, extensions and graphics work into multiple processes. That improves stability but can use considerable memory.

• Close tabs you genuinely no longer need instead of keeping several windows indefinitely.
• Remove extensions that are unknown, duplicated or no longer required.
• Use the browser’s own task manager, when available, to find a heavy tab or extension.
• Enable the browser’s supported sleeping-tab or memory-saving feature.
• Test without a page that contains a large document, video editor, map or live dashboard.

If memory stays high after every tab is closed, fully exit and reopen the browser. A browser using several gigabytes during a heavy session is not automatically a leak; continuous growth at idle is more suspicious.

4. Reduce startup and background applications

1. In Task Manager, open Startup apps.
2. Sort by Startup impact.
3. Disable nonessential launchers, meeting apps, updaters and vendor utilities.
4. Keep protection and required hardware controls enabled.
5. Restart and compare memory after five quiet minutes.

Also review Settings → Apps → Installed apps and uninstall software you no longer use. Do not remove Microsoft Visual C++ packages, hardware drivers or unknown components just because their names look technical.

5. Keep virtual memory on a safe setting

The page file lets Windows move less-active data to storage when RAM is needed elsewhere. Disabling it can create out-of-memory errors, app crashes and incomplete crash dumps.

1. Search for View advanced system settings.
2. Under Performance, choose Settings → Advanced.
3. Under Virtual memory, choose Change.
4. For most PCs, keep Automatically manage paging file size for all drives enabled.

If the system drive is almost full, free space rather than setting an arbitrary tiny page file. Heavy paging still feels slow, especially on a hard disk; it indicates that the workload may exceed available physical memory.

6. Check malware, unwanted software and memory leaks

Run an updated Windows Security Quick scan, followed by a Full scan when unexplained processes, redirects or unknown startup entries appear. Inspect the publisher and location of a process before trusting or deleting it.

For a suspected leak, restart the app and record its memory every 15–30 minutes while performing the same work. Consistent growth that never falls after the task ends is useful evidence for the app developer. Update or remove that exact application rather than applying system-wide “RAM fixes.”

7. Use a clean boot when no app is obvious

1. Open System Configuration.
2. On Services, select Hide all Microsoft services.
3. Disable the remaining third-party services for testing.
4. Disable enabled Startup apps in Task Manager and record the list.
5. Restart and recreate the normal workload.

If memory pressure disappears, re-enable items in groups until it returns. This isolates sync tools, security add-ons, RGB utilities, launchers and other persistent software. Restore normal startup after the test.

8. Test physical RAM and recognise a hardware limit

Search for Windows Memory Diagnostic, save all work and choose Restart now and check for problems. Any reported error needs hardware attention. If the PC manufacturer offers a longer memory diagnostic, run that as well when crashes or freezes continue.

Adding RAM is reasonable when:

• your normal trusted workload repeatedly uses nearly all physical memory;
• apps and tabs constantly reload despite no leak or malware;
• the system relies heavily on the page file;
• the device supports an upgrade with the correct memory type and capacity.

Soldered-memory laptops may not be upgradeable. Confirm the exact model specification before buying anything. For random full-system hangs, also follow the Windows 11 freezing guide.

Related Windows 11 performance guides

• Fix high CPU usage
• Fix random freezes
• Fix disk usage at 100%
• Fix slow startup