Users may be unable to import .XLSX files in Microsoft Viva Glint

Title: Users may be unable to import .XLSX files in Microsoft Viva Glint User impact: Users were unable to import .XLSX files in Microsoft Viva Glint. More info: Users received an error message indicating that the file was uploaded as an invalid format. As a temporary alternative, users could have imported the impacted files in .CSV format. Final status: We've confirmed that our reversion of the impacting change for all impacted users has ensured that Viva Glint correctly identifies .XLSX files, allowing these files to be imported as expected. Scope of impact: Your organization was affected by this event, and users who were attempting to upload a .XLSX file to Viva Glint were impacted. Start time: Thursday, October 22, 2026, at 12:00 PM UTC End time: Friday, October 23, 2026, at 8:17 PM UTC Root cause: A recent change intended to improve record count accuracy introduced a code conflict that caused .XLSX file types to be misidentified, resulting in these files not recognized and failing to upload in Viva Glint. Next steps: - We're continuing to improve our configuration change and feature upgrade process so that we can ensure consistent service availability. This is the final update for the event.

Title: Users are unable to import .XLSX files in Microsoft Viva Glint User impact: Users are unable to import .XLSX files in Microsoft Viva Glint. More info: Users receive an error message indicating that the file was uploaded as an invalid format. As a temporary alternative, users may import the impacted files in .CSV format. Current status: We've identified that a recent change intended to improve record count accuracy introduced a code conflict that results in files in .XLSX format not being recognized as the intended file type. We're reverting this change. Scope of impact: Your organization is affected by this event, and users who are attempting to upload a .XLSX file to Viva Glint are impacted. Start time: Thursday, October 22, 2026, at 12:00 PM UTC End time: Friday, October 23, 2026, at 8:17 PM UTC Root cause: A recent change intended to improve record count accuracy introduced a code conflict that causes .XLSX file types to be misidentified, resulting in these files not recognized and failing to upload in Viva Glint. Next update by: Friday, October 23, 2026, at 11:30 PM UTC