The warning pops up in the middle of saving a document: “This PC is running low on storage space.” No explanation of what’s taking up room, and now you have a decision to make that doesn’t have an easy answer. Pay for more online storage, another recurring bill for as long as you keep the files? Delete some old files and hope you never need them? Or a bit of both?
Many of the laptops we work on have a 256 or 512 gigabyte drive. That sounds like plenty until the photos, scanned documents, Teams downloads and years of email attachments pile up. Some people keep everything in the cloud and are prepared to pay for it. Others keep their files on the machine on purpose, to save money or because that’s how they like it. Either way the warning is a speed bump you didn’t plan for.
Before you spend money or delete files, there’s a step that costs neither.
Windows updates leave more behind than you’d expect
You’d expect Windows to tidy up once an update is done. Not completely. Updates keep a backup of the previous system files so Windows can roll back if something goes wrong, and those backups keep taking up space over time. Microsoft’s own guidance on cleaning up the Windows component store confirms this can be one of the largest hidden space hogs on a machine that’s been running the same version for a while.
It isn’t only updates. Apps add their own:
Browser and app caches. Chrome, Edge, Teams — all of them keep local copies of things to load pages faster next time. Each one is small. A year’s worth can be quite a bit.
Temporary files that end up not being temporary. Installers, downloads, screenshots — the stuff that was meant to be deleted after one use and wasn’t.
OneDrive files set to “always keep on this device.” Convenient until the synced folder grows larger than a local drive can hold.
Windows has a tool built exactly for this: Storage Sense, under Settings → System → Storage → Cleanup recommendations. It scans for temporary files, unused apps, and large files you haven’t opened in a while, and shows you what it would remove before you decide to delete anything.
One setting is worth changing. By default, Storage Sense only runs when your drive is critically low, so forgotten files you no longer need can stay there for months until it does. Setting it to run weekly makes it much less likely the drive ever reaches “critically low”.
Delete files, spend money, or do both?
If the drive is still low on space after the cleanup, it comes down to your own files now, and that’s the worrisome part. What if you delete something and need it later? Here’s how we’d tackle it:
Delete what you know you don’t need. Old installers, duplicate downloads, the third copy of the same presentation. If you can tell what it is and have a good copy elsewhere, it can go.
Don’t delete the only copy of anything. Not sure you’ll need it again? Copy it to a second place first, an external drive or your cloud storage, and delete it from the laptop once you’ve checked the copy can be opened.
Spend money on space when the files are current work. Client files, scans, photos you’d be unhappy to lose. Those belong somewhere backed up, and a regular fee is the cost of that.
Most of the time the answer is both: clear the downloads, installers and leftover files, delete the duplicates, and move the old files you want to keep somewhere other than your laptop’s drive. That way you’re only paying for the storage you need.
Two things to avoid. Don’t start deleting folders you don’t recognize in C:\Windows or C:\Program Files — that’s a sure way to break a working computer. And don’t spend money on more storage before running Storage Sense once. It costs nothing and takes a few minutes, and you may find you don’t need more.
When it’s not just clutter
If a drive keeps filling back up within days of being cleaned, that’s not a one-time cleanup problem anymore — it’s usually a specific application logging excessively, a sync tool stuck in a loop, or a backup job writing somewhere it shouldn’t. Worth investigating further rather than going through the same cleanup every few weeks.
If your team’s computers keep running into that issue and you’re not sure whether to clean up, spend money, or both, book a call with us. We’ll look at what’s filling the drives and help you decide.
