Some links on this page are affiliate links: if you buy through them we may earn a commission, at no extra cost to you.
0x8007045B means Windows detected that a shutdown was already in progress; it does not, by itself, identify why an update failed. Restart normally, check whether the update completed, and—if the code returns—look for the earlier error in Windows servicing logs before trying more involved repairs.
What error 0x8007045B means
Microsoft defines 0x8007045B as ERROR_SHUTDOWN_IN_PROGRESS: an operation tried to continue while Windows was shutting down or restarting. It can appear during an update installation, an operating-system upgrade, or a rollback. Microsoft’s dedicated explanation is written for Windows Server, but the error’s meaning and its advice to examine the preceding failure are relevant when diagnosing Windows servicing logs on client PCs too. Microsoft: Troubleshoot “Error shutdown in process”.
The code can be secondary rather than the cause. Microsoft notes that, in some cases, 0x8007045B can be safely ignored while troubleshooting the original error that came before it—for example, 0x800F0920. A cache reset or system-file repair will not necessarily help if another service initiated the restart.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallBefore you troubleshoot
- If Windows is visibly installing an update and showing progress, give it time. Do not force the computer off just because installation appears slow; there is no universal safe waiting period for every device and update.
- Use Start > Power > Restart when Windows responds. Reserve a forced shutdown for a system that is genuinely unresponsive and cannot be restarted through normal controls.
- Connect a laptop to reliable power, close applications, disconnect unnecessary USB devices, and temporarily disconnect from a VPN before retrying.
- Record your Windows version and edition, the update’s KB number if shown, and the exact error message. On a managed work or school PC, contact the administrator before changing services or update components.
1. Restart Windows and check whether the update succeeded
A restart can clear a pending shutdown state. After signing in, go to Settings > Windows Update > Check for updates. Check Settings > Windows Update > Update history as well: if the KB is already listed as successfully installed, do not install it again just because the earlier attempt displayed an error.
#1 Best Overall
- [Color] PCB color may vary (black or green) depending on production batch. Quality and performance remain consistent across all Timetec products.
- DDR3L / DDR3 1600MHz PC3L-12800 / PC3-12800 240-Pin Unbuffered Non-ECC 1.35V / 1.5V CL11 Dual Rank 2Rx8 based 512x8
- Module Size: 16GB KIT(2x8GB Modules) Package: 2x8GB ; JEDEC standard 1.35V, this is a dual voltage piece and can operate at 1.35V or 1.5V
- For DDR3 Desktop Compatible with Intel and AMD CPU, Not for Laptop
- Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States
2. Run the Windows Update troubleshooter
On Windows 11, Microsoft directs users to the automated troubleshooter in the Get Help app. You can also try Settings > System > Troubleshoot > Other troubleshooters > Windows Update > Run. Follow any repair prompts, restart if asked, then check for updates again. Labels and available routes can vary by Windows release and edition. Microsoft describes the tool as a way to diagnose and attempt to fix common update problems: Windows Update troubleshooter and troubleshoot problems updating Windows.
3. Repair the component store and protected system files
Use an administrator Command Prompt: open Start, search for Command Prompt, select Run as administrator, and approve the prompt. Run DISM first, wait for it to finish, then run System File Checker:
Rank #2
- Boosts System Performance: 32GB DDR5 RAM laptop memory kit (2x16GB) that operates at 5600MHz, 5200MHz, or 4800MHz to improve multitasking and system responsiveness for smoother performance
- Accelerated gaming performance: Every millisecond gained in fast-paced gameplay counts—power through heavy workloads and benefit from versatile downclocking and higher frame rates
- Optimized DDR5 compatibility: Best for 12th Gen Intel Core and AMD Ryzen 7000 Series processors — Intel XMP 3.0 and AMD EXPO also supported on the same RAM module
- Trusted Micron Quality: Backed by 42 years of memory expertise, this DDR5 RAM is rigorously tested at both component and module levels, ensuring top performance and reliability
- ECC Type = Non-ECC, Form Factor = SODIMM, Pin Count = 262-Pin, PC Speed = PC5-44800, Voltage = 1.1V, Rank And Configuration = 1Rx8
DISM.exe /Online /Cleanup-image /Restorehealth
sfc /scannowDISM repairs the Windows component store that supplies files for servicing; SFC checks and repairs protected system files. Restart after both commands finish, then retry Windows Update. Microsoft’s troubleshooting sequence is DISM followed by SFC. See Microsoft’s Windows Update guidance and Using System File Checker.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →If DISM says source files could not be found, repeating the same command is unlikely to resolve a missing repair source; suitable source files or Windows installation media may be needed. If SFC says it could not repair some files, consult Microsoft’s system-file repair guidance and the CBS log rather than downloading replacement files from an unofficial site. DISM and SFC can address corruption, but they do not establish that corruption caused this shutdown code.
Rank #3
- [Specs] DDR3L / DDR3 1600MHz PC3L-12800 / PC3-12800 204-Pin Unbuffered Non ECC 1.35V CL11 Dual Rank 2Rx8 based 512x8
- [Size] Module Size: 8GB Package: 1x8GB
- [Voltage] JEDEC standard 1.35V, this is a dual voltage piece and can operate at 1.35V or 1.5V
- [Compatibility] Compatible with DDR3 Laptop / Notebook PC, Mini PC, All in one Device
- [Color] PCB Color is Green
4. Reset Windows Update’s local cache
Try this if updates repeatedly fail and a damaged or incomplete local download is plausible. In an administrator Command Prompt, run these commands in order:
net stop bits
net stop wuauserv
net stop cryptsvc
net stop msiserver
ren %Systemroot%SoftwareDistribution SoftwareDistribution.old
ren %Systemroot%System32catroot2 catroot2.old
net start msiserver
net start cryptsvc
net start wuauserv
net start bitsThe commands stop update-related services, rename the download and catalog-cache folders, then start the services again. Windows can create fresh folders on the next update check. Renaming preserves the old folders temporarily; updates may need to be downloaded again. Restart the PC, then check for updates.
Rank #4
- Efficient performance: A lower voltage of 1.35 V is applied to reduce 20% power, enabling to effectively decrease hardware power consumption.
- System upgrade: With our high quality memory module, ideal for virtualization, cloud computing and multitasks handling, 100% factory-tested for stability, durability and compatibility.
- Durability Armed: 100% factory-tested to make sure the high stability, durability and compatibility.
- Compatibility is imperative: Compatible with major DDR3L / DDR3 motherboards.
- 【NOTE】The DDR3L UDIMM is backed by a lifetime warranty to promise complete services and technical support.
- Run the commands only in an administrator console. If a service will not stop, restart Windows and try the sequence again.
- Do not rename unrelated system folders. Keep the
.oldfolders until the update works and you no longer need the old cache; remove them later if desired. - On a business-managed device, check with IT first: resetting components can conflict with update policy, maintenance windows, or deployment tools.
Microsoft documents resetting update components among its Windows Update troubleshooting measures: Troubleshoot Windows Update issues. A cache reset can help with cache-related failures; it will not fix a separate service that keeps restarting the PC.
5. Find the earlier error or the service that initiated a restart
If the code returns, inspect the lines before 0x8007045B. The most useful location depends on what failed:
Best Value
- [Color] PCB color may vary (black or green) depending on production batch. Quality and performance remain consistent across all Timetec products.
- DDR3L / DDR3 1600MHz PC3L-12800 / PC3-12800 240-Pin Unbuffered Non-ECC 1.35V / 1.5V CL11 Dual Rank 2Rx8 based 512x8
- Module Size: 32GB KIT(4x8GB Modules) Package: 4x8GB ; JEDEC standard 1.35V, this is a dual voltage piece and can operate at 1.35V or 1.5V
- For DDR3 Desktop Compatible with Intel and AMD CPU, Not for Laptop
- Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States
%windir%LogsCBSCBS.logrecords component-based servicing activity, including many update installations.%windir%Windows~BTSourcesPanthersetupact.logis especially relevant to feature upgrades and Windows Setup operations.
Open the relevant log in Notepad and search for 0x8007045B. Then read the surrounding entries, particularly those immediately before it, for a more specific error or the operation that failed. In setupact.log, search for terms such as restart, shutdown, and initiated the restart, as well as names of management agents or third-party services. Microsoft documents these log locations and describes a case where a third-party management service initiated a restart: Microsoft’s error guidance.
If the log points to a third-party service, stop or temporarily disable only that identified service, and only if it is safe and you are authorized to do so. Do not disable random services or weaken Microsoft Defender as a general fix. For a home PC, a clean boot can help isolate startup software conflicts; Microsoft includes clean restart among its general update troubleshooting approaches. On a managed device, ask the administrator to investigate the agent or policy instead.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.6. If one specific KB keeps failing
Record the KB identifier from Update history and check Microsoft’s release-health or known-issues information for your Windows version. If you need to try a manual package, use the Microsoft Update Catalog and match the package to your Windows version and system architecture. Restart before and after installation. Do not download update packages from third-party driver or software sites.
Free tools Windows power users keep installed
One-click scans. No signup required.
Manual installation can help when a particular package or its download is the problem; it does not repair broader servicing corruption or explain a restart initiated by another service. Microsoft also outlines Update Catalog use in its Windows Update troubleshooting guidance.
7. Escalate if Windows still cannot update
- Try System Restore if the problem began after a recent change and a suitable restore point exists.
- Use Windows Recovery Environment if Windows no longer starts correctly.
- Consider a repair reinstall using the Windows Update repair option where available, or official installation media. An in-place repair installation is different from a clean installation and can preserve apps and personal files when the correct options are selected, but back up important data first. Ensure you have compatible media and adequate storage. Microsoft’s official Windows 11 download page is Download Windows 11.
- Contact Microsoft Support or a qualified technician if the PC repeatedly rolls back, will not boot, displays a BitLocker recovery prompt, or the logs point to a deeper servicing failure. For a work-managed computer, involve IT before attempting repair steps.
Windows 10 support status
Microsoft ended standard Windows 10 support on October 14, 2025. After that date, Microsoft no longer provides normal free Windows Update software updates, technical assistance, or security fixes for Windows 10. Troubleshooting an existing installation is separate from eligibility for ongoing updates; do not assume every Windows 10 PC continues to receive ordinary updates. See Microsoft’s Windows Update troubleshooter and support information.
Quick Recap
Which fix should you try next?
| What you see | Next step | Reason |
|---|---|---|
| One-time error after a restart | Restart normally and check Update history | The code may reflect a transient shutdown state, and the update may already have completed. |
| Error returns on repeated attempts | Inspect CBS or Setup logs | The preceding error may identify the actual failure. |
| DISM or SFC reports corruption | Complete the repair guidance for the reported issue, then retry | Servicing or protected-file damage may be blocking installation. |
| Downloads or update installation appear damaged | Reset update components | Windows will rebuild its local update cache. |
| PC restarts unexpectedly during an upgrade | Check Setup logs for the initiating service | A third-party service or management agent may be triggering the restart. |
| Only one KB fails | Check release health and the official Update Catalog | The package or a prerequisite may be specific to that update. |
| Windows Update remains broken after diagnosis and repairs | Consider a repair reinstall or seek support | Repeatedly retrying basic fixes may not address a deeper servicing problem. |
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
