Windows 10 V1903: Update install error 0x80073701 confirmed

[English]Microsoft has confirmed installation error 0x80073701 on Windows 10 version 1903 (May 2019 update) when installing updates to known issues.


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Users who tried to install the KB4512508 update on Windows 10 Version 1903 on August 13, 2019 (Patchday) failed with error code 0x80073701. The error message was:

Updates Failed, There were problems installing some updates, but we’ll try again later

The message indicates a temporary problem, which ‘could fix itself’. Nevertheless, I’m surprised at this error message. The error code stands for ERROR_SXS_ASSEMBLY_MISSING and indicates a missing assembly. Such errors commonly ‘don’t fix themselves in the rules’. I had picked this up in the blog post Windows 10 V1903: Install errors with Update KB4512508.

Microsoft confirms the installation issue

This weekend, Microsoft has confirmed that updates under Windows 10 Version 1903 can cause error code 0x80073701 during installation. I became aware of this via the following tweet.

It is therefore confirmed directly that users receive this error message during the update installation. The relevant status page says:


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Updates may fail to install and you may receive Error 0x80073701

Installation of updates may fail and you may receive the error message, “Updates Failed, There were problems installing some updates, but we’ll try again later” or “Error 0x80073701” on the Windows Update dialog or within Update history.

Microsoft states that they investigate the issue and will provide a fix. So far there is no update available.

Similar articles:
Windows Update ends with error 0x800f0982 / 0x8024200d
Windows 10 V1903: Error 0x8024200D or 0x800F081F with update KB4512508
Windows 10 V1703: Update KB4041676 install issues
Windows 10 V1903: Install errors with Update KB4512508


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