- Operation Failed Messaging Interfaces Have Returned An Unknown Error Microsoft Outlook (28.13 KiB) Viewed 1074 times
Messaging interfaces have returned an unknown error (Microsoft Outlook)
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thaterrormessage
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Messaging interfaces have returned an unknown error (Microsoft Outlook)
The operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook.
*IS THIS ERROR HAPPENING NOW? Reply in real-time below.* Hold software providers accountable - we rely on the community to acknowledge the same errors and their workarounds/fixes.