Excel Err Msg: "Too Many External References," with Windows NT

 Last reviewed: September 12, 1996
Article ID: Q105015
The information in this article applies to:
  • Microsoft Excel for Windows, versions 4.0, 4.0a
  • Microsoft Windows NT operating system version 3.1

When you attempt to add more than 255 sheets or charts to a Microsoft Excel workbook, you may receive the following error message: 

   Too many external references
Microsoft Excel workbooks are limited to no more than 255 sheets or charts per workbook.

DDEML function DdeCreateStringHandle() internally calls GlobalAddAtom() to add a string to the atom table. This global atom table is a piece of GlobalAlloc() memory limited to 64K, where each atom string is limited to 255 characters.

KBCategory: kberrmsg
KBSubcategory:

Additional reference words: 4.00 4.00a



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Last reviewed: September 12, 1996
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