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Error Details: Unspecified Error” or “Error Code: 0x80004005. As explained by Bleeping Computer, administrators began noticing error messages in the Exchange Server’s Event Log, such as “The FIP-FS Scan Process failed initialization. Problems started cropping up at midnight on January 1st, with an Exchange administrator on Reddit calling attention to the issue. And depending on how many emails are stuck in the queue, it may take a while for the messages to land in their intended recipients’ inboxes. The post also contains a detailed FAQ, noting that the solution “will take some time” for administrators to implement. Microsoft outlines the solution to the problem in its post, requiring administrators to either implement the fix manually or apply an automated script. “The version checking performed against the signature file is causing the malware engine to crash, resulting in messages being stuck in transport queues.” “The problem relates to a date check failure with the change of the new year and is not a failure of the AV engine itself,” Microsoft explains in a post on its Tech Community forum. “The problem relates to a date check failure with the change of the new year”