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'The Cognos Controller link is not installed ... COM object that has been separated' caused by using Excel 64-bit

Troubleshooting


Problem

User runs a report (for example a journal across report). This displays OK on the screen. User now tries to send it to Excel. An error appears. However, if the user launches Excel directly (not from via Controller), user can see the Controller Add-in successfully registered (visible in Excel). User can successfully use the Controller Excel link (directly in Excel) to log in (and work with it - for example to run reports).

Symptom

Error message when trying to send a 'journal across' report to Excel:


The Cognos Controller Link is not installed

After clicking OK:

Standard Error

Details:

Number: 5
Source: mscorlib
Description: COM object that has been separated from its underlying RCW cannot be used
at System.RuntimeType.Invoke...
<...>

[{"Product":{"code":"SS9S6B","label":"IBM Cognos Controller"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"Controller","Platform":[{"code":"PF033","label":"Windows"}],"Version":"10.2.1","Edition":"","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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Document Information

Modified date:
15 June 2026

UID

swg21981289

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