my C drive is full home windows 11

Question

C drive is full of microsoft down loads and won't let me download any mew programs

Answer 1

Hi Geri,

Windows downloads as in what?

Please do Step 1 in Assists advice.

Answer 2

First clear Windows Update cache using Disk Cleanup. Press the Windows key, type Disk Cleanup, right-click it and run as administrator. Select the C: drive. After the scan finishes click “Clean up system files”, select C: again, and check items such as Windows Update Cleanup, Delivery Optimization Files, Temporary Files, and Device Driver Packages. Run the cleanup. This alone can free several gigabytes.

You can also clear the Windows Update download cache manually. Open Command Prompt as administrator and run:

net stop wuauserv
net stop bits
rd /s /q C:\Windows\SoftwareDistribution\Download
net start wuauserv
net start bits

Windows will recreate the folder automatically and download only what it needs again.

Another large area is temporary files. Open Run with Windows + R, type:

%temp%

Delete everything in that folder. Then repeat with:

temp

You can also check C:\Windows\Temp and remove files there.

If Microsoft Store downloads are the problem, reset its cache by opening Run and typing:

wsreset.exe

If the drive is still full after cleanup, check the C:\Users\<your username>\Downloads folder and also C:\ProgramData\Microsoft\Windows\DeliveryOptimization\Cache, which can contain large update delivery files.

---

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

Answer 3

Follow these steps in Windows 11 to free space on the C: drive so new programs can be installed:

1. Use Storage Sense and Cleanup recommendations
   1. Select Start > Settings > System > Storage.
   2. Turn on Storage Sense to automatically remove temporary files and items in the Recycle Bin.
   3. In the same Storage page, select Cleanup recommendations.
   4. Go through each category (Temporary files, Large or unused files, Files synced to the cloud, Unused apps) and select items to remove, then select Clean up for each section.
2. Delete or move personal files off C:
   1. Open File Explorer from the taskbar and select This PC.
   2. Open folders such as Videos, Music, Pictures, and Downloads under This PC – these usually contain the largest files.
   3. Select View > Details, then right‑click in the file list and choose Sort by > Size to find the biggest files.
   4. Delete files that are no longer needed, then empty the Recycle Bin.
   5. To keep files but move them off C:, connect a USB drive or SD card, then in File Explorer select the files, choose Cut, browse to the external drive, and choose Paste.
3. Save new files to another drive
   1. Go to Start > Settings > System > Storage > Advanced storage settings > Where new content is saved.
   2. For each content type (documents, music, photos, videos, etc.), choose a different drive that has more free space.
4. Turn on OneDrive Files On-Demand
   1. Enable OneDrive Files On-Demand so only small placeholders stay on C: while full files are stored in the cloud. This frees local disk space but still lets files be accessed when needed. For details, see Save disk space with OneDrive Files On-Demand for Windows.
5. Fix low disk space caused by Microsoft Store temp files If the Temp folder is filling up with Microsoft Store app files:
   1. Reset Microsoft Store apps troubleshooter: Start > Settings > System > Troubleshoot > Other troubleshooters, then next to Windows Store Apps, select Run.
   2. Clear the Store cache: press Windows logo key + R, type wsreset.exe, and select OK. A Command Prompt opens briefly, then Microsoft Store opens.
   3. Reset Windows Update: Start > Settings > System > Troubleshoot > Other troubleshooters, then next to Windows Update, select Run.
   4. Restart the PC and check free space again.
6. Run antivirus scan Run Windows Security or another antivirus to check for malware that might be filling the drive with unwanted files.

After freeing several GB on C:, try installing or updating programs again.

---

References:

• Free up drive space in Windows
• Fix low disk space errors quickly in Windows