Microsoft has acknowledged a significant issue stemming from the recent security update KB5063878, particularly affecting applications that utilize the Windows Installer (MSI) for repairs.
The official documentation outlines that this glitch can trigger unexpected User Account Control prompts when non-administrator users attempt to perform an MSI repair. Notable applications impacted by this issue include Autodesk AutoCAD and older iterations of Microsoft Office, such as Office Professional Plus 2010.
This bug emerged following the deployment of update KB5063878 on August 12, 2025, specifically within the Windows Server 2025 environment. Microsoft recognizes the challenges this poses for both administrators and end users who depend on MSI-based installations and repairs. The unanticipated requests for elevated access rights disrupt daily operations and complicate software management, particularly in business settings where many users lack administrative privileges.
Solution available since September 3
As of September 3, 2025, Microsoft has indicated that a resolution to this issue has been implemented, effectively mitigating the problem for most organizations. This update assures that the majority of users should no longer experience the complications associated with the error. Furthermore, Microsoft has also addressed an additional concern related to installations via Windows Server Update Services, where users encountered error code 0x80240069 during the update rollout. This issue has likewise been resolved, restoring the integrity of the update process.
Microsoft’s communication regarding this error reflects a focused approach, concentrating on a clearly defined problem and the status of its resolution. By highlighting the specific interaction between MSI repairs and users lacking administrative rights, the company provides clarity. The mention of affected applications, such as AutoCAD and Office, serves to illustrate the practical implications of the issue while reassuring organizations that this is a temporary setback that has now been rectified. This transparency allows businesses to understand their current standing and trust in the availability of solutions through standard update channels.
