Windows 10 Windows 10 KB5048652 issue

drhubb

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Dec 15, 2024
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After installing the Windows 10 KB5048652 update, my computer startup time went from less than 30 seconds to almost 3 minutes. The only thing that changed was the update. Anyone else have this issue?
 

Solution
Hi @drhubb,
The issue you're describing — significant slowdowns in startup time following the installation of the KB5048652 update — certainly indicates that something in this patch is affecting your system's boot process. You’re definitely not alone when it comes to Windows updates occasionally wreaking havoc on performance; similar complaints sometimes arise following cumulative updates.
Let me break down some possible causes and resolutions:

Possible Causes:​

  1. Startup Conflicts:
    • The update might have enabled or altered certain startup programs or services. New components introduced in updates can sometimes register themselves to auto-start.
  2. Driver Issues:
    • Some updates can clash with...
Hi @drhubb,
The issue you're describing — significant slowdowns in startup time following the installation of the KB5048652 update — certainly indicates that something in this patch is affecting your system's boot process. You’re definitely not alone when it comes to Windows updates occasionally wreaking havoc on performance; similar complaints sometimes arise following cumulative updates.
Let me break down some possible causes and resolutions:

Possible Causes:​

  1. Startup Conflicts:
    • The update might have enabled or altered certain startup programs or services. New components introduced in updates can sometimes register themselves to auto-start.
  2. Driver Issues:
    • Some updates can clash with outdated or incompatible drivers, causing performance bottlenecks during startup.
  3. Disk Optimization Pending:
    • After a major update, Windows often performs post-update tasks like indexing files or optimizing the disk, which can increase boot times temporarily.
  4. Background Services:
    • It's possible that KB5048652 has introduced new background services or processes that increase the load during startup.
  5. Corrupted Files:
    • System files or other components updated during the installation might have glitches, leading to inefficiencies.

Steps to Diagnose and Fix the Issue:​

1. Check Startup Programs:​

  • Press Ctrl + Shift + Esc to open Task Manager.
  • Go to the Startup tab and review the list:
    • Disable anything unnecessary by right-clicking and selecting "Disable". Ensure critical system processes are untouched.

2. Update Supporting Drivers:​

  • Run Device Manager and update drivers for your key components, especially for:
    • Graphics card
    • Disk drives
    • Network adapters
    If you suspect driver issues, try rolling back any driver that was updated close to the time the update was installed.

3. Run Disk Cleanup:​

  • Open the Start menu, type Disk Cleanup, and select it.
  • Clean system files related to Windows Update (make sure to check "Windows Update Clean-up").

4. Assess Windows Services:​

  • Open the Run dialog (Windows Key + R), type services.msc, and press Enter.
  • Look for any services related to the update (these might include diagnostics or telemetry-related services) and try setting them to "Manual" for testing purposes.

5. Check for Pending Updates:​

  • Sometimes, slowdowns are resolved after follow-up bug fixes issued by Microsoft:
    • Go to Settings > Update & Security > Windows Update.
    • Check for and install any additional updates.

6. Undo the Update (if necessary):​

If the problem persists and no acceptable workaround appears, consider rolling back the KB5048652 update:
  • Open Settings > Update & Security > Windows Update.
  • Select View update history > Uninstall updates.
  • Locate KB5048652 and uninstall it to see if performance improves.
    Be sure to let Microsoft know via Feedback Hub if this resolves your issue, as it may signal a wider problem they need to address.

7. Log Analysis:​

A closer look at startup logs might help. Use Event Viewer:
  • Open Start, type Event Viewer, and launch it.
  • Navigate to Windows Logs > System, look for any errors or warnings during startup.

Temporary Workarounds:​

  • Clean Boot:
    • Perform a clean boot (disable all startup items and non-Microsoft services) to isolate third-party conflicts:
    • Type msconfig in the Run dialog, go to the Services tab, check "Hide all Microsoft services", then disable the rest.
  • Optimize Startup Settings:
    • If you're running an HDD, consider enabling Fast Startup in the Control Panel under Power Options > Choose what the power button does.

If these suggestions don't help, feel free to provide any additional symptoms or share logs — I’ll be glad to dive deeper into the problem! Let me know if you’ve noticed any other performance issues accompanying the startup delay.
 

Solution
If your startup time slowed after the KB5048652 update, try these:

1. Type cleanmgr in the Run box and clean up files.
2. Open Command Prompt (Admin) and run:
sfc /scannow
DISM /Online /Cleanup-Image /restorehealt

3. Go to Control Panel > Power Options and uncheck Turn on fast startup.
4. Go to Settings > Update & Security > Uninstall updates and remove KB5048652.
 

Nice set of steps, @datawizard0103! These are practical actions to troubleshoot the slowdown caused by the KB5048652 update. I’d just like to add a few notes and complementary tips to further nail down the issue:

1. Disk Cleanup (cleanmgr) Insight:​

Running Disk Cleanup is a solid step, but you could elevate it further by using the "Clean up system files" button in Disk Cleanup to remove old updates or system debris (especially if the KB5048652 update left residual clutter).

2. Correcting DISM Command:​

There's a small typo in your DISM command—it should read:
Code:
cmd
DISM /Online /Cleanup-Image /RestoreHealth
This checks and repairs the Windows component store, which complements the sfc /scannow step effectively.

3. Unchecking Fast Startup:​

Disabling Fast Startup under Power Options is a solid workaround, but keep in mind:
  • While it can help with certain performance issues after updates, disabling Fast Startup might slightly increase boot times on its own.
  • If Fast Startup is already off, ensure Hibernate and Hybrid Sleep are also disabled to rule out power configuration bottlenecks.

4. Uninstalling KB5048652:​

If the update caused significant issues, removing it seems like a rational choice. However, here are two additional considerations:
  • Pause Updates Temporarily:
    After uninstalling KB5048652, pause updates for 7 days (or longer manually) to prevent Windows from reinstalling the same update immediately.
  • Reinstall the Update (If Necessary):
    Once uninstalled, try reinstalling KB5048652 cleanly—sometimes corruption during installation can cause the slowdown.

Additional Suggestions:​

If these steps don’t completely resolve the performance issues, consider the following:
  1. Review Startup Programs:
    • Open Task Manager > Startup tab.
    • Disable any unnecessary startup programs that might further delay your system's startup time.
  2. Check Event Viewer:
    • Open Event Viewer (Win + S, search for Event Viewer) and check Windows Logs > System for error or warning logs related to boot time.
    • Slowdowns might indicate driver issues, failed services, or problematic updates.
  3. Apply Pending Manufacturer Updates:
    • If the update causes a driver-related issue, check for new driver versions from your PC/Motherboard/SSD manufacturer. Major updates often mismatch with older drivers, triggering performance lags.

Let me know if these refinements help or if there’s any way to further assist with your sluggish startup after KB5048652! 😊
 

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