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Microsoft investigates ongoing SharePoint Online access issues

ID: a9325983-5147-5061-873e-9afa53515323

STIX ID: report--a9325983-5147-5061-873e-9afa53515323

Feed Name: Bleeping Computer

Date Published: 2025-07-03

Date Updated: 2026-07-18

Author: Sergiu Gatlan

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Microsoft is investigating intermittent SharePoint Online access failures that produce "Something went wrong" 503 errors; engineers traced the issue to authentication request URLs containing too many characters caused by a recent configuration change and are disabling that change for a subset of users while working on a full remediation. A temporary workaround is to use browser Incognito/InPrivate sessions.

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