[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"extension:v3:en:xltm":3},{"resolvedFromAlias":4,"canonicalExt":5,"ext":5,"name":6,"category":7,"categoryName":8,"updatedAt":9,"popularity":10,"summary":11,"howToOs":12,"quickAnswer":18,"answerIntro":19,"whatIs":20,"description":21,"furtherReading":22,"openInstructions":41,"commonIssues":55,"securityNotes":74,"faq":78,"aliases":88,"mimeTypes":89,"relatedExtensions":91,"breadcrumbs":139,"categoryAnchor":149,"categoryFuturePath":150,"metaDescription":151,"availableHowToOs":152,"openOnDeviceLinks":153,"cannotOpenReasons":169,"cannotOpenFixes":170,"convertOptions":171,"securityAffiliateMessaging":172,"securityAffiliates":173},false,"xltm","Microsoft Excel Macro-Enabled Template (Office Open XML)","documents","Documents","2026-06-12T09:22:36.785Z",55,".xltm is a Microsoft Excel template file that can include VBA macros. Open it with Microsoft Excel to create new workbooks based on the template, while preserving any embedded macro code.",[13,14,15,16,17],"windows","mac","linux","ios","android","To open .XLTM files on Windows, right-click the .xltm file and choose Open with → Microsoft Excel (or double-click if Excel is already the default).","To open a .xltm file, use Microsoft Excel (desktop). It’s an Excel template designed to create new spreadsheets with predefined formatting and (optionally) VBA macros.",".xltm is an Excel macro-enabled template in the Office Open XML family (a zipped XML-based package). Unlike .xltx templates, .xltm is designed to preserve VBA macro code (and can preserve older Excel 4.0 macro sheets). It is identified by the registered media type application/vnd.ms-excel.template.macroEnabled.12.","An .xltm file is used when you want a reusable Excel starting point—layouts, formulas, styles, and settings—while also keeping automation such as VBA macros. When opened in Excel, templates are typically used to create a new workbook based on the template rather than editing the template content as a regular workbook.",[23,26,29,32,35,38],{"title":24,"url":25},"IANA Media Types (application/vnd.ms-excel.template.macroEnabled.12)","https://www.iana.org/assignments/media-types/media-types.xhtml",{"title":27,"url":28},"Microsoft Support: File formats that work with Visual Basic","https://support.microsoft.com/en-us/office/file-formats-that-work-with-visual-basic-69afddfd-4479-4466-9f37-3f4046b5e107",{"title":30,"url":31},"ECMA-376 (Office Open XML file formats standard)","https://ecma-international.org/publications-and-standards/standards/ecma-376/",{"title":33,"url":34},"Wikipedia: List of Microsoft Office filename extensions (.xltm)","https://en.wikipedia.org/wiki/List_of_Microsoft_Office_filename_extensions",{"title":36,"url":37},"freedesktop.org: Shared MIME-info Database specification","https://specifications.freedesktop.org/shared-mime-info-spec/latest-single/",{"title":39,"url":40},"SAS Studio 3.6 Developer’s Guide to Repositories (MIME mapping table including .xltm)","https://documentation.sas.com/api/docsets/webeditorrepodg/3.6/content/webeditorrepodg.pdf?locale=en",{"windows":42,"macos":45,"linux":48,"ios":51,"android":53},[43,44],"Right-click the .xltm file and choose Open with → Microsoft Excel (or double-click if Excel is already the default).","If the file opens in Protected View or shows a security warning, review the source before choosing whether to enable macros.",[46,47],"Open the .xltm file in Microsoft Excel for Mac (File → Open, then select the template).","If prompted about macros, only enable them if you trust the file’s origin.",[49,50],"If your desktop doesn’t recognize .xltm associations, check the MIME type mapping using your environment’s shared-mime-info database.","For best compatibility (especially with macros), open the file in Microsoft Excel on Windows/macOS; Linux office suites may not fully support VBA macros.",[52],"Open the .xltm in Microsoft Excel for iOS if available, but expect limited or no VBA macro support; for full macro behavior, transfer the file to a desktop Excel installation.",[54],"Open the .xltm in Microsoft Excel for Android if available, but for macro-enabled workflows, use desktop Microsoft Excel.",[56,62,68],{"title":57,"description":58,"steps":59},"Macros are disabled or won’t run",".xltm can contain VBA macros, but Excel may block them depending on security settings or because the file came from an untrusted location (for example, downloaded from the internet).",[60,61],"Confirm you trust the source of the template before enabling any macros.","Open the file in Microsoft Excel desktop and review the security prompt/Protected View behavior before choosing to enable macros.",{"title":63,"description":64,"steps":65},"Opened as a template but changes don’t “save back” to the original file","Excel templates are meant to be used as a starting point for new workbooks. Opening a template often results in a new document derived from the template rather than editing the template itself.",[66,67],"If you need to modify the template itself, open it from within Excel (File → Open) and then save it explicitly as an .xltm template.","If you intended to create a new spreadsheet, use Save As to store the new workbook with a different name.",{"title":69,"description":70,"steps":71},"File opens in another app or shows an unknown file type on Linux","On Linux/Unix desktops, file association often depends on the shared MIME database, which maps extensions like .xltm to MIME types and applications.",[72,73],"Ensure your system’s shared-mime-info database is installed/updated so .xltm is recognized and associated correctly.","Manually choose an application to open it, or open it in Microsoft Excel on another platform for best macro compatibility.",[75,76,77],".xltm is macro-enabled and can preserve VBA macro code; treat files from unknown or unexpected sources as potentially unsafe before enabling macros.","Microsoft notes that this format can preserve VBA macros (and Excel 4.0 macro sheets), which increases the risk of active-content attacks compared to non-macro templates like .xltx.","If Excel opens the file in Protected View or shows a macro/security warning, use that as a signal to verify the file’s provenance before enabling content.",[79,82,85],{"question":80,"answer":81},"What is the difference between .xltm and .xltx?",".xltm is an Excel template that can contain macros (VBA), while .xltx is a template without macros. Use .xltm only when you need macro-enabled automation.",{"question":83,"answer":84},"Is .xltm the same as .xlsm?","No. .xltm is a macro-enabled template intended to generate new workbooks; .xlsm is a macro-enabled workbook file.",{"question":86,"answer":87},"What MIME type is used for .xltm?","application/vnd.ms-excel.template.macroEnabled.12 is registered for Excel macro-enabled template files (.xltm).",[],[90],"application/vnd.ms-excel.template.macroEnabled.12",[92,98,104,110,116,121,127,133],{"ext":93,"name":94,"category":7,"categoryName":8,"popularity":95,"summary":96,"howToOs":97},"pdf","Portable Document Format",100,"PDF files maintain consistent formatting across devices and are widely used for documents that require a fixed layout, such as forms and reports.",[13,14,15,16,17],{"ext":99,"name":100,"category":7,"categoryName":8,"popularity":101,"summary":102,"howToOs":103},"docx","Microsoft Word Open XML Document",98,"DOCX files are widely used word-processing documents created by Microsoft Word, supporting rich text and multimedia elements.",[13,14,15,16,17],{"ext":105,"name":106,"category":7,"categoryName":8,"popularity":107,"summary":108,"howToOs":109},"xlsx","Microsoft Excel Open XML Spreadsheet",92,"XLSX files are widely-used spreadsheet files that store data, formulas, and charts, and are compatible with various spreadsheet applications.",[13,14,15,16,17],{"ext":111,"name":112,"category":7,"categoryName":8,"popularity":113,"summary":114,"howToOs":115},"log","Plain-text Log File",85,".log files are typically plain-text logs that record events, messages, and errors from software or operating systems. They can usually be opened with basic text editors on any platform.",[13,14,15,16,17],{"ext":117,"name":118,"category":7,"categoryName":8,"popularity":113,"summary":119,"howToOs":120},"pptx","Microsoft PowerPoint Open XML Presentation","PPTX files are widely used for creating and sharing presentation decks with multimedia content.",[13,14,15,16,17],{"ext":122,"name":123,"category":7,"categoryName":8,"popularity":124,"summary":125,"howToOs":126},"txt","Plain Text File",82,"TXT files contain plain text and can be opened on any operating system with a variety of text editors.",[13,14,15,16,17],{"ext":128,"name":129,"category":7,"categoryName":8,"popularity":130,"summary":131,"howToOs":132},"xlsm","Excel Macro-Enabled Workbook (Office Open XML)",75,".xlsm is an Office Open XML Excel workbook that can contain VBA macros. Open it in Microsoft Excel; be cautious because macros can run code.",[13,14,15,16,17],{"ext":134,"name":135,"category":7,"categoryName":8,"popularity":136,"summary":137,"howToOs":138},"ppsx","PowerPoint Show (Office Open XML Slideshow)",70,".ppsx is a Microsoft PowerPoint “Show” file that is designed to open directly in Slide Show mode instead of the normal editing view.",[13,14,15,16,17],[140,143,146],{"label":141,"to":142},"Home","/",{"label":144,"to":145},"File Extension Index","/file-extension",{"label":147,"to":148},".XLTM","/file-extension/xltm","category-documents","/category/documents","Learn what .XLTM files are, how to open them on every platform, common fixes, and security best practices.",[13,14,15,16,17],[154,157,160,163,166],{"os":13,"label":155,"to":156},"Open .XLTM on Windows","/how-to/open-xltm-on-windows",{"os":14,"label":158,"to":159},"Open .XLTM on Mac","/how-to/open-xltm-on-mac",{"os":15,"label":161,"to":162},"Open .XLTM on Linux","/how-to/open-xltm-on-linux",{"os":16,"label":164,"to":165},"Open .XLTM on iOS","/how-to/open-xltm-on-ios",{"os":17,"label":167,"to":168},"Open .XLTM on Android","/how-to/open-xltm-on-android",[57,63,69],[60,61],[],"active_document",[174,178],{"name":175,"description":176,"affiliateUrl":177},"Avast","Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.","https://www.avast.com/lp-aff-consumer-store?expid=inf601",{"name":179,"description":180,"affiliateUrl":181},"Norton","Norton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.","http://buy.norton.com/aff_home?utm_campaign=en-ww_nor_n36_aff_nas_nau_nah_cj_nad_low:_sec_nat_mktc_norton_360"]