Microsoft 365 & Entra ID
Sign-in and token errors, Entra ID conditional access, OneDrive, Teams and SharePoint.
35 articles
8344
8344 and Event ID 6801: Entra Connect cannot authenticate to your directory
Error 8344 and Event ID 6801 mean Entra Connect cannot read AD or reach Entra ID. Check the connector accounts…
AADSTS80001
AADSTS80001 and AADSTS80002: pass-through auth and password sync are failing
AADSTS80001 means the authentication agent cannot reach a domain controller, so on-premises passwords fail. Here is how to get validation…
0x8004de40
OneDrive 0x8004de40 and 0x8004de88: the sync app cannot reach the cloud
0x8004de40 means the OneDrive sync app cannot complete a secure connection. Fix the TLS versions, cipher order and proxy that…
0x8004de80
OneDrive 0x8004de80 and 0x8004de86: OneDrive will not sign in or link the account
0x8004de80 and 0x8004de86 stop OneDrive signing in. Microsoft's documented fix is to reinstall the sync app; clear the stale account…
0x8004de85
OneDrive 0x8004de85 and 0x8004def7: wrong or missing account, suspended account or full storage
0x8004de85 points at the account OneDrive is signed in with; 0x8004def7 at full storage or a suspended account. Check both…
403 FORBIDDEN
403 FORBIDDEN and Access Denied in SharePoint Online and OneDrive
403 FORBIDDEN and Access Denied in SharePoint Online mean broken permissions, blocked sharing or a locked site. Work through the…
SharePoint Online is out of storage space
SharePoint Online is out of storage space: tenant and site quota errors
SharePoint Online is out of storage space puts sites into read-only mode. Learn how tenant storage is calculated and the…
HTTP 429
HTTP 429 and HTTP 503 in SharePoint Online: throttling and list limits
HTTP 429 and HTTP 503 mean SharePoint Online is throttling your requests or a list is over threshold. Learn how…
CAA20003
Teams CAA20003 and CAA2000C: clock skew, Conditional Access and forced prompts
Microsoft documents CAA20003 as a wrong device clock or a Conditional Access policy, and CAA2000C as a sign-in needing interaction.…
CAA70004
Teams CAA70004 and CAA82EE2: the network path to Microsoft 365 is blocked
Microsoft documents CAA70004 and CAA70007 as connection issues and CAA82EE2 as a network connectivity problem. Check the path before the…
CountViolation
CountViolation: licence assignment fails because the tenant has no free seats
CountViolation means Microsoft 365 has run out of seats for that product, so assignment fails. Learn how to confirm it…
MutuallyExclusiveViolation
MutuallyExclusiveViolation and DependencyViolation in group licence assignment
MutuallyExclusiveViolation means two service plans clash or a dependency is missing, so the licence will not apply. Here is how…