Why can t i open a diagram for editing in visio for the web

You can create and edit diagrams available from the Visio for the web landing page, such as Basic Diagram, Process Steps, and Cycle Diagram. You can also edit many diagrams created from Visio desktop templates, but not all of them. Diagrams that contain advanced features are not supported when you are editing a diagram. You can continue to edit these diagrams in Visio, and the changes appear the next time you open the diagram in Visio for the web.

Important    Creating and editing a diagram in Visio for the web requires a license to edit. For more information, contact your Office 365 admin.

The following is a list of advanced features that are not supported when you are editing in Visio for the web:

Feature	Description
File formats	The following file formats are not supported: Drawing (.vsd) Stencil (.vss) Template (.vst) Web drawing (.vsw) XML drawing (.vdx) XML stencil (.vsx) XML template (.vtx) XML drawing, macro-enabled (.vsdm) XML stencil (.vssx) XML stencil, macro-enabled (.vssm) XML template (.vstx) XML template, macro-enabled (.vstm) Add-on (.vsl)
Data connected diagrams	Diagrams with data connected to data sources including: Microsoft Excel workbook Microsoft Access database Microsoft SharePoint list Microsoft SQL Server database Other OLEDB or ODBC data source
Shapes with certain gradients and effects	Advanced Visio Desktop gradients and effects, whether applied to a shape or added as a new shape, that are not available in Visio for the web include: Themes and variants Quick styles Effects from shape styles Gradients available from the Format Shape pane in Visio Sketch effects
Templates with solutions and add-ins	Examples include Organization Charts, timelines, and some third-party solutions.
Layers	Diagrams with layers that have set the Lock, Color, or Transparency properties.
Shapes with certain protection properties set	The following shape protection properties are not supported: LockBegin LockCrop LockCustProp LockEnd LockGroup LockRepIace The following shape protection properties are supported: LockAspect LockCalcWH LockDelete LockFormat LockFromGroupFormat LockGroup LockHeight LockMoveX LockMoveY LockRotate LockSeIect LockTextEdit LockThemeCoIors LockThemeConnectors LockThemeEffects LockThemeFonts LockThemeIndex LockVariation LockVtxEdit LockWidth
Large diagrams	Diagrams with more than 1000 shapes on a page or more than 50 pages.
Objects	All object types including: ActiveX controls OLE objects Ink Objects
Miscellaneous	Other features including: Text characters with double underline or double strikethrough Text with text direction set to vertical Lines with custom patterns or compound types Lines with Begin or End arrows other than those available in Visio for the web Custom color schemes 2D shapes with negative dimensions defined

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