What are- All Types of Read Verification Errors?

Exchange Server has become the most popular messaging application with several businesses as a result of its extroverted communication and collaborative features. So when an Exchange Server goes down, the consequences on the organization can be threatening. Unexpectedly, all email communications come to an end, meetings schedules become inaccessible and client's lists lost. This is the state of affairs which needs fast action, and quick return to the regular service.

Before taking any action, it is very significant to know the reason behind the problem and the most common reason of such problems is the failed read verification. When this problem occurs, the system can't read data from the database and the database becomes inaccessible. In such circumstances, you may get one of the enlisted read verification errors:

• Description: MSExchangeIS ((455)) Direct read found corrupted page error -1018 ((1:251563) (0-2295758), 251563 379225672 381322824). Please restore the database from a previous backup.
• Microsoft OLE DB Provider for ODBC Drivers error '80004005' [Microsoft] [ODBC Microsoft Access 97 Driver] The Microsoft Jet database engine cannot open the file '(unknown)'. It is already opened exclusively by another user, or you need permission to view its data.
• Database page read failed verification because of a -1018 error.
• Database page read failed verification because of no page data.
• Information Store (1812) The streaming page read from the file "D:\Programme\Exchsrvr\mdbdata\priv1.stm" at offset 693297152 (0x000000002952e000) for 4096 (0x00001000) bytes failed verification due to a page checksum mismatch.
• A log range read failed verification because of a range checksum mismatch.
• The request could not be performed because of an I/O device error. ". The read operation will fail with error -1022 (0xfffffc02). If this error persists then the file may be damaged and may need to be restored from a previous backup.

The above errors indicate that there are incorrect links or pointers between the pages, which causes the read verification process to fail. Sometimes, the page read from the Exchange mailbox store file ‘.edb’ is uninitialized or empty, i.e. the page number field contains all zeroes. This often results due to incorrect mapping of pages into the database file, resulting in checksum mismatch and a series of -1018 and -1019 errors. Other possible reasons for database damage include:

• Improper system shutdown
• Virus attack
• Application malfunction
• Operating system corruption
• Hardware failure
• Improper use of database repair tools

If you run into such problems, try restoring your database from an online backup. To get rid of the wasted space and expunge all empty pages in the database, do an offline defragmentation by running the ‘Eseutil /d’ command. To discard all damaged pages in the database, run ‘Eseutil’ tool with ‘/p’ option.

In case you fail to correct these errors, use Stellar Repair for Exchange. The software helps you overcome all types of read verification errors by repairing and restoring the corrupt Exchange mailbox database file. Using this tool, you can extract individual mailboxes from the database and save them as importable Outlook PST files in your system. The tool safely recovers all objects in your Exchange Server mailbox including emails, notes, contacts, schedules, and calendar entries.

This Exchange Server Recovery software carries out the EDB recovery by using advanced and highly robust scanning methods. In order to provide easy recovery, this software has an intuitive and cool looking user interface. You can use this Exchange recovery software with all file versions of Microsoft Exchange Server such as 2019, 2016, 2013, 2010, 2007, 2003, 2000, and 5.5.