Windows 10 KB5034441 Update Fiasco: How to Tackle the 0x80070643 Error and BitLocker Bug

Windows 10 KB5034441 Update Fiasco: How to Tackle the 0x80070643 Error and BitLocker Bug. In the wacky world of Windows 10, the latest Patch Tuesday update has turned into a game of ‘Error Bingo’ for users globally. Everyone’s a winner with the 0x80070643 error when trying to armor up with the KB5034441 security update for BitLocker. Picture this: yesterday, Microsoft, playing the role of the well-intentioned but slightly clumsy tech giant, dropped the KB5034441 update to shield us from the menacing CVE-2024-20666 BitLocker bug. But alas, the update turned into a digital gremlin, giving users the cold shoulder with the 0x80070643 error during installation.

Imagine rebooting your PC, expecting digital harmony, only to be welcomed by the Windows Update screen’s equivalent of ‘Oops, we did it again!’ The screen laments with a poetic, ‘There were some problems installing updates, but we’ll try again later. (0x80070643).’ Microsoft, in a ‘plot twist’ bulletin, admitted that a coding goof-up replaced the expected ‘Windows Recovery Environment servicing failed, (CBS_E_INSUFFICIENT_DISK_SPACE)’ error with our now-familiar 0x80070643.

Here’s the kicker: Windows 10, in its infinite wisdom, decided that a 500 MB recovery partition was enough. Spoiler alert: it’s not. The update demands a beefier space to flex its muscles. Even a spanking new Windows 10 install with a 522MB WinRE partition still faces the ‘not enough room at the inn’ problem.

Microsoft’s solution? It’s DIY time – shrink your C: partition by 250 MB and conjure up a larger Recovery Partition. They even provided a command-line magic spell involving reagentc.exe and diskpart.exe. But beware, for those not fluent in tech wizardry, this might feel like trying to defuse a bomb with a toothpick. And remember, the BitLocker bogey needs physical access to your device, so it’s not quite the tech apocalypse.

For those who’d rather not play ‘Partition Tetris,’ Microsoft might just wave its wand and offer an automated, less headache-inducing solution soon. Until then, remember to backup your data, because playing with partitions can be like juggling digital eggs.

The saga ends with a twist: even a 1 GB Windows RE partition might not be the magic bullet. So, if you’re not feeling adventurous, it might be wise to sit tight and wait for Microsoft’s next move in this digital game of whack-a-mole.

I believe I may have found the solution in my case.

Since my partition was large enough for the update, I followed these steps:

First, I checked whether WinRE (Windows Recovery Environment) was enabled on my device. It was enabled, so I disabled it, then re-enabled it, and retried the Windows update. This time, it finally worked.

Here’s what I did:

1. Open Command Prompt as an administrator (Right-click on CMD > select ‘Run as administrator’).
2. Enter the command "reagentc /info" to check if Windows RE (WinRE) is enabled.
3. Disable WinRE using "reagentc /disable".
4. Re-enable WinRE using "reagentc /enable".
5. Retry the Windows update, which successfully went through.

This worked for me, and I hope it helps anyone experiencing the same issue. Good luck!

• Try this alternative fix.

FIX IT…Windows 10 KB5034441 Security Update Fails With 0x80070643 Errors

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