Hello there, I'm Gopal an Independent Advisor. I w...

Here’s a polished version with clearer wording and corrected command syntax:

:::writing{variant="chat_message" id="48217"} Hello, I’m Gopal, an Independent Advisor. I’ll do my best to help you.

The Windows update may be stuck at 97% because of corrupted or missing system files or an issue with the Windows Update services. Please try the following steps.

Step 1: Run the Windows Update troubleshooter

1. Select Start > Settings > System > Troubleshoot > Other troubleshooters.
2. Under Most frequent, locate Windows Update and select Run.
3. Follow the on-screen instructions.

Step 2: Reset the Windows Update components

1. Type Command Prompt in the Windows search box.
2. Right-click Command Prompt and select Run as administrator.
3. Enter the following commands one at a time, pressing Enter after each command:

cmd
net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc

4. Close Command Prompt and restart your computer.

Step 3: Run the SFC and DISM tools

1. Open Command Prompt as an administrator again.
2. Enter the following command and press Enter:

cmd
sfc /scannow

Please do not close the Command Prompt window until the verification reaches 100%.

After the scan is complete, run these commands one at a time:

cmd
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

Once the process is complete, restart your computer and try installing the Windows update again.

I hope these steps help resolve the issue. Please let me know if you need further assistance. Thank you! :::

What happened

Error 0x80070005 means Access Denied. Windows Update could not access a required system file, folder, or registry entry. Common causes include damaged permissions in WinSxS or SoftwareDistribution, corrupted update files, third-party antivirus software locking files, or an update-related policy restriction. (Microsoft Learn)

Build 29634.1000 is an official Windows 11 Insider build released on July 27, 2026, for the Experimental (Future Platforms) channel. Microsoft’s release notes do not list 0x80070005 as a widespread build issue, so this is most likely a problem on the PC rather than the update being withdrawn. This build also renews the Insider flight certificate that otherwise expires on August 11, 2026. (Windows Blog)

The Retry all button simply means Windows Update is ready to retry the failed installation. Repair Windows Update first, then select it.

Fix it in this order

Before proceeding, back up important files. Disconnect unnecessary USB drives, printers, docks, and external storage. Turn off any VPN, and temporarily pause third-party antivirus protection. Re-enable the antivirus afterward. Microsoft notes that external hardware and non-Microsoft security software can interfere with Windows upgrades. (Microsoft Support)

1. Run the Windows Update troubleshooter

Go to:

Settings → System → Troubleshoot → Other troubleshooters → Windows Update → Run

Apply any recommended repairs and restart the computer. (Microsoft Support)

2. Reset the Windows Update cache

Right-click Start, select Terminal (Admin), and choose Yes.

Run these commands one at a time:

cmd
net stop wuauserv
net stop bits
net stop cryptsvc

if exist "%windir%\SoftwareDistribution.old" rd /s /q "%windir%\SoftwareDistribution.old"
if exist "%windir%\System32\catroot2.old" rd /s /q "%windir%\System32\catroot2.old"

ren "%windir%\SoftwareDistribution" SoftwareDistribution.old
ren "%windir%\System32\catroot2" catroot2.old

net start cryptsvc
net start bits
net start wuauserv

If a service says it was not running, continue with the next command. Restart the computer after completing the commands. This recreates the Windows Update download and signature databases. (Microsoft Learn)

3. Repair Windows system files

Open Terminal (Admin) again and run:

cmd
DISM /Online /Cleanup-Image /RestoreHealth

Wait until it completes, then run:

cmd
sfc /scannow

Restart the computer when both commands finish. Microsoft specifically recommends DISM and SFC for repairing the Windows component store and system files involved in update installation. (Microsoft Learn)

Now open:

Settings → Windows Update → Retry all

4. Repair update-folder permissions

Only perform this step if the update still fails with 0x80070005.

Open Terminal (Admin) and run:

cmd
icacls "%windir%\WinSxS" /reset /t /c /q
icacls "%windir%\SoftwareDistribution" /reset /t /c /q

Restart the computer and retry the update.

If it fails again, restore ownership of the component store to TrustedInstaller:

cmd
icacls "%windir%\WinSxS" /setowner "NT SERVICE\TrustedInstaller" /t /c /q

Restart and retry once more. These are Microsoft’s specific permission-repair steps for Windows Update error 0x80070005. (Microsoft Learn)

5. Reinstall your current Windows version as a repair

If none of the above works, go to:

Settings → System → Recovery → Fix problems using Windows Update → Reinstall now

This reinstalls your currently installed Windows version, repairs system components, and preserves your applications, personal files, and settings. After it finishes, restart and try build 29634.1000 again. (Microsoft Support)

If it still fails

Open PowerShell as administrator and generate the update log:

powershell
Get-WindowsUpdateLog -LogPath "$env:USERPROFILE\Desktop\WindowsUpdate.log"

A file named WindowsUpdate.log will appear on the desktop. Search it for 0x80070005; the nearby entries should identify the exact folder, file, registry key, antivirus driver, or policy that denied access. (Microsoft Learn)

You’re okay—nothing was damaged.

• NET HELPMSG 3521 only means that Windows Update and BITS were already stopped.
• The red errors occurred because the commands were written for Command Prompt, but you ran them in PowerShell. PowerShell uses $env:windir instead of %windir%, and uses commands such as Rename-Item rather than rd /s /q. Microsoft’s manual reset instructions specifically show those older commands for an elevated Command Prompt. (Microsoft Learn)
• My previous deletion command was incorrectly formatted for PowerShell. Sorry about that.

Continue from your current PowerShell window

Make sure the window title says Administrator: Windows PowerShell. Copy and paste this entire block:

powershell
$stamp = Get-Date -Format "yyyyMMdd-HHmmss"

if (Test-Path "$env:windir\SoftwareDistribution") {
    Rename-Item `
        -Path "$env:windir\SoftwareDistribution" `
        -NewName "SoftwareDistribution.old-$stamp"
}

if (Test-Path "$env:windir\System32\catroot2") {
    Rename-Item `
        -Path "$env:windir\System32\catroot2" `
        -NewName "catroot2.old-$stamp"
}

Start-Service cryptsvc
Start-Service bits
Start-Service wuauserv

This renames the update-cache folders using a timestamp, so it will not conflict with an existing .old folder. PowerShell’s Rename-Item command changes the folder name without deleting its contents. (Microsoft Learn)

You might see no output after successful commands. That is normal.

Restart and repair Windows

Restart the computer normally. Then open PowerShell as administrator again and run:

powershell
DISM.exe /Online /Cleanup-Image /RestoreHealth

Wait until it finishes. It can appear stuck at certain percentages, so leave the window open. Then run:

powershell
sfc /scannow

After SFC reaches 100%, restart the computer again.

Finally, open:

Settings → Windows Update → Retry all

Do not manually delete any other folders inside C:\Windows\System32.