EV Export fails Access is denied. (0x80070005)

Hello together,

we have a customer which have problems exporting items via ev search.

Sometimes we see the following error while exporting. 

In the dtrace we can see the following:

CItem::Get com_error raised Error [0x80070005] (err=80070005)
460578 08:10:53.290 [7136] (w3wp) <8616> EV:M CItem::Get Id: (null) ArchiveId:1C48A364CF407B1488907FD5637D07BE91110000evserver01 hr: Access is denied. (0x80070005)
460579 08:10:53.290 [7136] (w3wp) <8616> EV:H {CItem::Get} HRXEX fn trace : Unexpected fn exit path, returning error [0x80070005], [d:\builds\14_\ev\v-prod-s\sources\source\storage\evstorageapi\item.cpp, lines {733,774}, built Mar 16 12:26:04 2021].
460580 08:10:53.290 [7136] (w3wp) <13228> EV-H {EVS} Exception: Access denied. Insufficient permissions to access the requested object(s). Info:Error retriving item [Sequence no = '29127', archiveId = '1C48A364CF407B1488907FD5637D07BE91110000evserver01'] || User: Domain\User|| Diag:HRESULT: 80040303 Type:System.Runtime.InteropServices.COMException ST: at KVS.EnterpriseVault.Interop.IItem3.Get(Int32 DetailLevel)| at

The customer have 4 ev servers. If we switch to another ev server we are able to export. The issue occurs on the other ev servers as well so the issue occurs random.