Windows error 0x0000026A, 618

Detailed Error Information


MessageThe specified compression format is unsupported.
Declared inwinerror.h

This appears to be a raw Win32 error. More information may be available in error 0x8007026A.

HRESULT analysis[2]

This is probably not the correct interpretation of this error. The Win32 error above is more likely to indicate the actual problem.

This code indicates success, rather than an error. This may not be the correct interpretation of this code, or possibly the program is handling errors incorrectly.

Reserved (R)false
Reserved (X)false
FacilityCode0 (0x000)
DescriptionThe default facility code.[2][1]
Error Code618 (0x026a)

Possible solutions


Is PEVerify warning about duplicate methods wrong here?


Both methods share the same method signature and that is simply not allowed.

For the CLR, a method signature consists of the method name, generic arity, formal parameter arity, formal parameter types and kinds, and return type.

Definition of a method signature

Serge Lidin states in .Net IL Assembler, chapter 10 under Method Table Validity Rules:

No duplicate records—attributed to the same TypeDef and having the same name and signature—should exist unless the accessibility flag is privatescope.

of course you can find this rule in the ECMA-335 specifications, in partition II.22.1:

Unique Rows: No table shall contain duplicate rows, where “duplicate” is defined in terms of its key column, or combination of columns.

answered on Stack Overflow Feb 2, 2016 by thehennyy • edited May 23, 2017 by Community


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  1. winerror.h from Windows SDK 10.0.14393.0

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