Install KB4345421 to fix error 0x000000D1 on Windows 10 v1803

By: Madeleine Dean
2 minute read
KB4345421

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If you’ve often experienced error 0x000000D1 after installing the latest Windows 10 April Update patches, then download and install KB4345421 to fix this problem for good. Microsoft rolled out this hotfix just one week after it released the problematic updates that triggered the issue mentioned above.

This is not the only bug fix that this update brings. Here is the complete list of KB4345421 improvements and fixes:

  • The update fixed the issue with the DHCP Failover server that may cause enterprise clients to receive an invalid configuration when requesting a new IP address. This results in a loss of connectivity.
  • The issue that may cause the restart of the SQL Server service to fail occasionally with the error, “Tcp port is already in use” has also been fixed.
  • The bug where the W3SVC remains in a “stopping” state, but cannot fully stop or it cannot be restarted has been fixed as well.

Download KB4345421

As always, you can automatically download KB4345421 via Windows Update or you can simply install the stand-alone update package from Microsoft’s Update Catalog.


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

KB4345421 issues

While Microsoft said it was not aware of any issues affecting the update, some Windows 10 users reported their computers often froze when they tried to create a new Windows 10 image. Here’s how one user describes this issue:

I tried to create a new windows 10 image from the scratch with windows media CD, then I updated it, and when it reaches a different update (KB4284848) it freezed and I can’t do anything except force restart, so I took a new dell PC right from the box never been used and I ran windows updates and it reached (kb4345421) and it also freezed. I updated All drivers, BIOS, chipset…etc.

If you encountered other issues after installing update KB4345421, do tell us more about your experience in the comments below.

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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