# Excel.ReadFromFile operation failed

**URL:** <https://forum.dynamobim.com/t/excel-readfromfile-operation-failed/14539>\
**Category:** Revit\
**Tags:** revit, excel, dynamo\
**Created:** [September 4, 2017, 3:45pm UTC](https://forum.dynamobim.com/t/excel-readfromfile-operation-failed/14539 "2017-09-04T15:45:48Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![zhukoven](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/zhukoven/32/70962_2.png) [@zhukoven](https://forum.dynamobim.com/u/zhukoven)\
**Post date:** [September 4, 2017, 3:57pm UTC](https://forum.dynamobim.com/t/excel-readfromfile-operation-failed/14539/3 "2017-09-04T15:57:51Z")

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@htlcnn, sometimes something goes wrong with Excel. Have a look at the known issues here:

> **[Known Issues](https://github.com/DynamoDS/Dynamo/wiki/Known-Issues)**
>
> Open Source Graphical Programming for Design. Contribute to DynamoDS/Dynamo development by creating an account on GitHub.

> Excel nodes can be rendered non-functional by bad registry data. To correct this: Go to Start–\> Run → regedit. Browse to HKEY\_CLASSES\_ROOT–\>TypeLib–\>{00020813-0000-0000-C000-000000000046}. Delete the 1.8 key.

> We recommend using Excel 2013 or higher. Excel 2010 works in most cases, but 2007 does not.

You can also dive into this thread, maybe, it’ll help you: [Excel Nodes Fail Dynamo 1.1.0](https://forum.dynamobim.com/t/excel-nodes-fail-dynamo-1-1-0/5450)

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