Why is my SSD suddenly slow after a Windows update?

Windows 11's file indexing and a background maintenance task have both caused real SSD slowdowns after recent updates, confirmed by Microsoft itself in more than one case. Turn off unnecessary indexing, check for a firmware update from your SSD's maker, and confirm TRIM is still running before you assume the drive itself has failed.

Symptom	Likely cause	Quick check
Boot got slower right after an update	Search indexing rebuilding in the background	Task Manager, look for SearchIndexer.exe using disk
Large file copies crawl	TRIM not running, or drive nearly full	Run fsutil behavior query DisableDeleteNotify in an admin terminal
Game load times jumped	Windows swapped in a generic NVMe driver	Device Manager, check the driver date on your NVMe controller
Random stutters during heavy use	Drive running hot, SSDs throttle like GPUs do	Check temperature in CrystalDiskInfo or HWiNFO64

What actually broke, and did Microsoft admit it?

Yes, more than once. Over the past year, Windows updates have shipped with a search indexing bug that pegs disk usage at or near 100 percent for hours after installing an update, and every app on the drive feels that as lag even though the SSD itself is fine. Microsoft has acknowledged versions of this and shipped fixes, but a new update can reintroduce a similar issue, because the indexing service is complex and gets touched with almost every release.

Is it the drive or is it Windows?

Check drive health before blaming the drive. Open CrystalDiskInfo or your SSD maker's own tool, Samsung Magician, WD Dashboard or Crucial Storage Executive, and look at the SMART status and remaining life percentage. A drive reporting good health and high remaining life that is still slow is almost always a Windows or driver problem, not a failing SSD. A drive reporting a warning or a caution status is a different conversation, and that one is worth bringing to us.

What actually fixes it?

Four things, in order. Disable and rebuild search indexing for the affected drive through Indexing Options in Control Panel. Confirm TRIM is enabled with the command above, since a result of 0 means it is on. Check Device Manager for your NVMe controller's driver date and update it from the manufacturer's site if Windows has quietly rolled it back to a generic one. Finally, keep at least 10 to 15 percent of the drive free, because SSDs slow down as they fill up and have less room to do background garbage collection.

From the floor

We do not have an exact count of how often "my SSD died" turns out to be something else entirely, but it happens often enough that checking drive health is the very first thing Kavya does at the counter, before anything else. Most weeks that check clears the drive completely, and the actual fix is a driver update or a five-minute indexing reset, not a new part.

Illustration generated with AI.

FAQ

Does a Windows update really cause SSD slowdown, or is it a coincidence?
It is real and documented, not a coincidence. Search indexing rebuilds itself after major Windows updates and can peg disk usage for hours, and Microsoft has confirmed versions of this bug in its own release notes more than once.

Will disabling search indexing break anything?
Not in any way that matters for most people. Windows search still works after disabling indexing, it just searches file names directly instead of full file contents, which is slightly slower for content search and completely fine for everything else.

How do I check if TRIM is enabled?
Open Command Prompt as administrator and run fsutil behavior query DisableDeleteNotify. A result of 0 means TRIM is active. A result of 1 means it is disabled, which is unusual on a stock Windows install and worth fixing.

Should I update my SSD's firmware?
Yes, if your manufacturer's tool shows one available. Firmware updates often fix exactly this kind of compatibility issue with a new Windows build. Only use the official tool for your specific drive model, since firmware tools are not interchangeable between brands.

Is my SSD dying if it is just slow, not disconnecting?
Usually not. A drive that is only slow, with no disconnects and no errors, and a healthy SMART status, is far more likely to be a software issue. Genuine failure almost always shows up as disconnects, bad sectors or a SMART warning, not just reduced speed.

Bring your machine in and we will run a free drive health check while you wait. If you are due for an upgrade, the WD Black SN850X NVMe 1TB is priced at ₹18,600 as of 10 September 2026, and the Samsung 990 EVO Plus 1TB is ₹16,500 as of 10 September 2026.

Related: Will undervolting my GPU lower FPS? · Nvidia's new GeForce driver is causing stutter · Building your first PC: the complete guide

Kavya Mishra handles walk-in customers and every RMA that comes back through the counter. Published 10 September 2026.