0x80070024_
Update Failed � Sharing Buffer Exceeded
Windows 10/11 just hit error 0x80070024, which corresponds to a fault called "Update Failed � Sharing Buffer Exceeded". This is one of the most searched error codes for this OS — you're not alone, and there's a clear fix.
What Actually Happened
Windows 10/11 tried to install an update and the specific system condition behind it was 'too many files opened for sharing'. Clearing the update cache and retrying resolves the majority of cases.
Symptoms
A Windows Update install fails or rolls back with error 0x80070024, sometimes after a restart loop
Common Causes
- The underlying Win32 condition ERROR_SHARING_BUFFER_EXCEEDED (too many files opened for sharing) was raised while staging or applying the update
- The Windows Update cache (SoftwareDistribution) holds a stale or corrupted entry
- Insufficient free disk space to stage the update package
- A third-party antivirus or a Group Policy restriction is blocking the installer
How to Fix It
-
01
Run the built-in Windows Update Troubleshooter (Settings > System > Troubleshoot)
-
02
Stop the Windows Update service:
net stop wuauserv && net stop bits -
03
Rename the cache folder:
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old -
04
Restart services:
net start wuauserv && net start bits -
05
Run system repair:
sfc /scannow && DISM /Online /Cleanup-Image /RestoreHealth
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Root Cause Breakdown
0x80070024 is the HRESULT wrapping of Win32 error 36 (ERROR_SHARING_BUFFER_EXCEEDED): too many files opened for sharing. The servicing stack (CBS) failed to complete the staging phase.
Should You Worry?
This blocks security patches from installing � address within a week.
Power-User Tip
Before running DISM, renaming C:\Windows\SoftwareDistribution to SoftwareDistribution.old clears 80% of 0x80070024 failures instantly.
DIY fix: $0; Paid remote tech support if DISM repair fails: $40�$90