What does HRESULT 0x8000500B (E_ADS_PROPERTY_MODIFIED) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the ADSI object has uncommitted property changes.

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E_ADS_PROPERTY_NOT_MODIFIED	E_ADS_CANT_CONVERT_DATATYPE

E_ADS_PROPERTY_MODIFIED

E_ADS_PROPERTY_MODIFIED is a dirty-state signal for an ADSI object. It is especially important around GetInfo, because Microsoft documents that GetInfo reloads attributes from the directory and can overwrite changes already made in the local cache but not yet committed with SetInfo.

Do not refresh over uncommitted cache changes

Track every Put/PutEx operation that changes the local property cache.
Commit intended changes with SetInfo before calling GetInfo to refresh from the server.
When concurrency matters, log both the cached values and a fresh server read so stale local state is visible.

The sequence of ADSI cache calls is part of application correctness. A common failure pattern is modify → read another property → implicit or explicit refresh → later commit, which can lose the earlier cached change. Microsoft recommends committing changes before refreshing. If this status appears unexpectedly, inspect helper functions that call GetInfo internally and treat cache refresh as a state-changing operation, not a harmless read.

ADSI attribute cache · The GetInfo method · Generic ADSI errors

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