Could OneDrive Be Slowing Down Your Windows 11 PC
- 15 steps
- Needs administrator rights
- Includes a restart or sign-out
OneDrive can slow down a Windows 11 PC when it uploads, downloads, or scans a large number of files in the background. The quickest test is to pause syncing for two hours and see whether the lag disappears.
Windows 11 starts OneDrive, Microsoft’s cloud storage service, every time you sign in. Most of the time it uses very little. After you add a large folder or sign in on a new PC, it can use a lot of CPU (the processor’s workload), disk, and network capacity until it finishes.
This guide shows how to confirm whether OneDrive is the cause in Task Manager. It then shows how to reduce OneDrive’s load without removing it.
Yes, OneDrive can slow a Windows 11 PC during first syncs, large folder uploads, and stuck sync loops. To check, press Ctrl+Shift+Esc to open Task Manager, select the Processes tab, and watch Microsoft OneDrive’s CPU, Disk, and Network use. If the slowdown stops after you select Pause syncing and choose 2 hours from the OneDrive gear menu, OneDrive is the cause.
How OneDrive slows down a PC
OneDrive does not run constantly at full speed. It does heavy work in bursts, and the bursts have a handful of common triggers.
- A first sync. When you sign in on a new PC or add a large folder, OneDrive compares every file with the cloud copy and transfers the differences. This can take hours for tens of thousands of files.
- Desktop, Documents, and Pictures backup. If these folders are backed up to OneDrive, anything you save to them gets uploaded. Large photo libraries and video projects are the usual cause of long uploads.
- Many small files. A folder with thousands of tiny files, such as a code project, makes OneDrive track every change. That costs more CPU than one large file of the same total size.
- Files that change constantly. Databases, virtual machine disks, and mailbox files get re-uploaded each time they change.
- Slow storage or a busy connection. On a hard disk drive (HDD) or a slow Wi-Fi link, sync competes with everything else you do.
- A stuck sync. OneDrive sometimes loops on one problem file and keeps retrying, which keeps the disk or CPU busy for no benefit.
Signs OneDrive is behind the slowdown
OneDrive is a likely suspect when the slowness comes and goes with your file activity. These signs point to it:
- The PC slows down right after you sign in, then improves later.
- The fan runs and the disk light stays on while you are not working.
- The OneDrive cloud icon in the notification area shows sync arrows or says Processing changes for a long time.
- File Explorer is slow to open folders under your OneDrive folder.
- Your internet feels slow even though nobody is downloading anything.
If the slowness is constant and never changes, even with sync paused, OneDrive is probably not the cause. If pausing sync changes nothing, the section “When OneDrive is not the cause” covers what to check next.
Check whether OneDrive is slowing down your 🪟 Windows 11 PC, then reduce the load
These steps show whether OneDrive is slowing down your Windows 11 PC and then cut its workload. None of them require administrator privileges, and you can reverse each one.
- Press Ctrl+Shift+Esc. This opens Task Manager, the built-in tool that shows what is using your CPU, memory, disk, and network.
Task Manager - Select the Processes tab. It is the first item in the left-hand list. If you see a small window with no tabs, click More details at the bottom first.
- Find Microsoft OneDrive in the list. It appears under Apps or Background processes. Click the CPU column header to sort by CPU use, then check the Disk and Network columns as well.
- Watch the OneDrive numbers for one minute. Short spikes after you save files are normal. Sustained high CPU, disk, or network use while you are not touching your files means OneDrive is busy syncing.
- Click the OneDrive cloud icon in the taskbar. It sits in the notification area at the right end of the taskbar. If you do not see it, click the up arrow (Show hidden icons) first. A panel opens and shows the sync status and recent files.
- Click Help & Settings. This is the gear icon at the top right of the panel. A menu opens below it.
- Select Pause syncing, then choose 2 hours. This is the test. The cloud icon now shows a pause symbol, and OneDrive stops transferring files without closing.
- Use the PC normally for ten minutes. Keep Task Manager open on the side. If OneDrive’s numbers drop to near zero and the lag goes away, OneDrive was the cause. If nothing changes, OneDrive is not the problem, so skip to the section on other causes.
- Open OneDrive settings. Click the cloud icon, then Help & Settings and Settings. The taskbar route to OneDrive settings has more detail if the icon is missing.
- Select the Account tab, then click Choose folders. A window opens with a tick box for each folder in your OneDrive. Clear the boxes for large folders you do not need on this PC, then click OK. Those folders disappear from this PC and stay safe in the cloud.
- Select the Sync and backup tab. Open Advanced settings and find the Files On-Demand section. Check that it is on. Files On-Demand keeps files online-only until you open them, so they do not take disk space or sync work.
- Look for upload and download limits in Advanced settings. If your connection is slow, set a limit on the upload rate or download rate so OneDrive leaves bandwidth for other apps. Menu labels in this area vary between OneDrive versions.
- Open File Explorer and right-click a large OneDrive folder. Select Free up space. Windows removes the local copies and keeps the files online. The cloud icon now appears next to each file.
- Open Settings Apps Startup. Turn off the Microsoft OneDrive toggle only if you want OneDrive to stop starting at sign-in. Sync does not run until you open OneDrive yourself.
- Restart the PC. After you sign in, open Task Manager again and compare OneDrive’s CPU, disk, and network use with your earlier readings.
To undo the pause, click the cloud icon, choose Help & Settings, and select Resume syncing. OneDrive resumes by itself when the pause time ends. To bring back a folder you cleared in Choose folders, tick its box again and click OK.
Understand the file icons before you free up space
Files On-Demand (a setting that keeps files in the cloud until you open them) shows the state of each file in File Explorer. The icon tells you whether a file uses disk space on this PC.
- Cloud icon: the file is online-only. It takes almost no space and downloads when you open it.
- Green tick in a white circle: the file downloaded when you opened it. Readers who cannot tell the colours apart can check the file’s status in its right-click menu. It stays on the PC, and Windows can turn it back into an online-only file when space runs low.
- Solid green circle with a white tick: the file is set to Always keep on this device. It always uses disk space.
To keep specific files available offline, right-click them and choose Always keep on this device. Do this only for files you need without internet access. If you need the opposite and want every file stored locally, the guide to downloading all files from OneDrive to Windows covers it.
Online-only files need an internet connection. Opening a large one on a slow link makes the app that opens it appear to hang while the file downloads. This looks like a slow PC but is a slow download.
If Files On-Demand or other options are greyed out or missing
Several things stop OneDrive options from appearing. Check these before you assume the setting has been removed.
- The OneDrive folder is on an unsupported drive. Files On-Demand needs a drive formatted as NTFS (the standard Windows file system). It does not work on a drive formatted as exFAT or FAT32, or on many removable drives. If your folder sits on one of those, the option is unavailable. The guide to moving your OneDrive folder shows how to relocate it to an NTFS drive.
- A work or school account manages OneDrive. An organization can lock settings such as Files On-Demand or backup. Greyed-out options with a message that your organization manages them mean you need to ask your IT administrator.
- OneDrive is out of date. Settings labels change between versions, and older builds show a different layout. Open Help & Settings Settings About to see the version, and update Windows if it is old.
- The cloud icon is missing. OneDrive may not be running. Open the Start menu, type OneDrive, and press Enter to start it.
Fix a sync that never finishes
If Task Manager shows OneDrive busy for many hours and the icon still shows sync arrows, the sync may be stuck on one file. Click the cloud icon and look for an error message or a file name listed with a problem. Common causes are file names with unsupported characters, files open in another app, and a full OneDrive storage limit (quota).
If you cannot find a cause, you can reset the sync using the OneDrive sync reset. This makes OneDrive check every file again from the start. Expect a long re-scan afterward, so run it when you do not need the PC for heavy work.
Stop OneDrive backing up a folder
To review it, open OneDrive settings, select Sync and backup, and click Manage backup. Switch off the toggle next to each folder you do not want backed up to OneDrive. Files already uploaded remain in OneDrive. The OneDrive file management guide explains how to find and move those files afterward.
Close or turn off OneDrive completely
If the pause test proved OneDrive is the cause and the lighter settings do not help, you can stop it from running. Closing it for the current session is the mildest option. The guide to quitting and closing OneDrive shows how. It starts again at the next sign-in unless you also turn off startup.
When OneDrive is not the cause
If pausing sync changed nothing, OneDrive is not responsible. Look at the rest of the Task Manager list on the Processes tab. Sort by CPU, Memory, and Disk in turn to see which app uses the most. Open the Startup apps tab to see which programs launch at sign-in and have a high startup impact.
A disk that stays at or near 100 percent with nothing obvious running often points to a slow HDD, a Windows update installing, or an antivirus scan. A PC with little free memory slows down regardless of what OneDrive does. These causes need their own fixes and are separate from OneDrive.
What to do next
Over the next day of normal use, open Task Manager now and then to confirm OneDrive stays quiet outside sync bursts. If you added large folders later, repeat the pause test to see whether the new files are behind any renewed slowdown.
If you have not yet decided what to keep in the cloud, the guide to setting up OneDrive on Windows 11 shows how to choose which folders sync from the start. Feature updates can occasionally restore OneDrive’s startup entry or backup settings, so check Settings Apps Startup after a major update.
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About the Author
Richard
Tech Writer, IT Professional
Richard is a writer at Geek Rewind who turns complex IT tasks into clear, step-by-step guides. He draws on years of hands-on experience in system administration and enterprise IT operations, focusing on Windows, Linux and WordPress: the problems people actually run into, and the fixes that work. His server and WordPress guides come from systems he runs himself. Richard builds and maintains the platform behind Geek Rewind, from its Ubuntu servers and Nginx configuration to its custom WordPress plugins. Many new tutorials start with readers' questions, and he's always glad to answer them in the comments.
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