The Client Trace log will show the following:
11:42:10.363[2396][H]: EVMSP:
11:42:10.363[2396][L]: EVMSP: [Policy::IsOpAllowed] Exit: MAPI_E_NO_ACCESS 11:42:10.363[2396][L]: HDR: AutoReleaseSyncCoordinator::~AutoReleaseSyncCoordinator11:42:10.363[2396][L]: HDR: EVMSPSyncCoordinator::Release11:42:10.363[2396][L]: HDR: EVMSPSyncCoordinator::WaitForObject11:42:10.363[2396][L]: HDR: ~EVMSPSyncCoordinator::WaitForObject11:42:10.363[2396][L]: HDR: ~EVMSPSyncCoordinator::Release11:42:10.364[2396][L]: HDR: ~AutoReleaseSyncCoordinator::~AutoReleaseSyncCoordinator11:42:10.364[2396][H]: EVMSP: [Folder::DeleteFolder] A COM error exception has been caught:80070005 11:42:10.364[2396][L]: EVMSP: [Folder::DeleteFolder] Exit: MAPI_E_NO_ACCESS 11:42:10.364[2396][L]: EVMSP: [Prop::GetLastError] Enter 11:42:10.364[2396][M]: EVMSP: [Prop::GetLastError] hResult: MAPI_E_NO_ACCESS 11:42:10.364[2396][M]: EVMSP: [Prop::GetLastError] Flags: 0x80000000 11:42:10.364[2396][L]: EVMSP: [Common::GetLastError] Enter 11:42:10.365[2396][L]: CL10N::GetTranslatedMsg11:42:10.365[2396][L]: CComAutoUnlock::CComAutoUnlock 11:42:10.365[2396][L]: ~CComAutoUnlock::CComAutoUnlock 11:42:10.365[2396][L]: CComAutoLock::CComAutoLock 11:42:10.365[2396][M]: Acquiring lock: 0x01F3558C11:42:10.365[2396][M]: Acquired lock: 0x01F3558C11:42:10.365[2396][L]: ~CComAutoLock::CComAutoLock 11:42:10.365[2396][L]: CComAutoUnlock::~CComAutoUnlock 11:42:10.365[2396][M]: Released lock: 0x01F3558C11:42:10.366[2396][L]: ~CComAutoUnlock::~CComAutoUnlock 11:42:10.366[2396][L]: ~CL10N::GetTranslatedMsg11:42:10.366[2396][H]: EVMSP: [Common::GetLastError] Returning text: An administrative policy does not allow deletions from your vault. This will usually indicate that the Desktop Policy below for Virtual Vault is not enabled:
Users can hard delete items
Verify the following Desktop Policy:
Properties of the Desktop Policy | Advanced | Virtual Vault | Users can hard delete items
If the policy is already set but the client log shows the line below, then the policy has not properly synchronized with the mailbox. In this case, Zap the mailbox by following Related Article: 100016639
[Policy::IsOpAllowed] Operation: HardItemDelete, Allowed: false