The file format and extension of %FILENAME% don't match. I've reported the bug (and here) to Microsoft.Īddenum 2: Microsoft has now confirmed the bug in the support article for update KB5002242.Īfter you install this update, you might encounter the following warning when you open Excel files from a network location if the file extension is correct: However, this only suppresses the error message – the bug is not fixed. The problem is described in the article Force file extension to match file type. After a restart the problem was gone for him. A workaroundĪddendum: User Alber posted a workaround using the following registry entry.Ĭreate a new DWORD32 Key HKEY_CURRENT_USER\Software\Microsoft\Office\*X*\Excel\Security\ExtensionHardening=0x00000000(0) So if the error occurs with you, you know where to look. If it sets a drive as file path, the XLS file can be opened without problems. The file format and extension do not match.
If I shortened the file name, the file could be opened without error message.Īnd in this comment user Hauten reports trouble with KB5002242 when opening an XLSX on a DFS server via UNC. The phenomenon occurred only with long directory paths or file names. Had the same problem with Excel 2013 on a TS.Īfter removing the kb5002242, all is well again. German blog reader Stefan confirms the error on a terminal server with Excel 2013 and names update KB5002242 as the cause. You should not open it if you do not trust its source. The file format and the file extension of "….xlsx" do not match. Quick feedback – I don't know what patch it is due to but with Excel 2013 we now always get this error when opening: Within my German blog, Sebastian has reached out to report an issue with Microsoft Excel 2013 in conjunction with the August 2022 updates. Update triggers an open error in xlsx files xls format might not be merged correctly.
The update further resolves an issue where shared workbooks in. An attacker who successfully exploited this vulnerability could bypass the Packager Object Filters feature. The file could be sent via email or downloaded from a compromised website. To exploit the vulnerability, an attacker must send a specially crafted file to a user with an affected version of Microsoft Excel and trick the user into opening it. The Excel 2013 update KB5002242 closes the Microsoft Excel Security Feature Bypass Vulnerability CVE-2022-336.
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