Error 'Debug Assertion Failed' and 'Expression: (unsigned)(c+1) <=256' refreshing Excel-link caused by invalid setting in CCR.CONFIG file

Troubleshooting

Problem

When refreshing an Excel-link spreadsheet using F9 or changing cells that force Excel to recalculate cells an error message appears. The problem only occurs for one/some users.

Symptom

Microsoft Visual C++ Debug Library
Program: C:\Program Files\Microsoft Office\OFFICE11\EXCEL.EXE
File: isctype.c
Line: 56

Expression: Expression: (unsigned)(c+1) <=256

For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)

[ Abort ] [ Retry ] [ Ignore ]

[{"Product":{"code":"SS9S6B","label":"IBM Cognos Controller"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Controller","Platform":[{"code":"PF033","label":"Windows"}],"Version":"8.2","Edition":"Not Applicable","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SSMRTZ","label":"IBM Cognos Controller on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Historical Number

1039617

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Document Information

More support for:
IBM Cognos Controller

Software version:
8.2

Operating system(s):
Windows

Document number:
375681

Modified date:
08 May 2025

UID

swg21347864

IBM Support

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