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Article ID: 258000 - Last Review: January 27, 2007 - Revision: 6.2
Memory Leak When You Use the Microsoft Base Cryptographic Provider
This article was previously published under Q258000
When you run a program that repeatedly calls
CryptAcquireContext(), each
CryptAcquireContext() call generates a 100 kilobyte (KB) memory leak.
This problem can occur if you are running the Microsoft
Base Cryptographic Provider (Rsabase.dll) version 1877 that is included with
Internet Explorer version 5.01. This version of the Rsabase.dll file calls
MapViewOfFile on itself to examine the appended signature for comparison with
the signature in the registry. This problem occurs because the mapped view is
not correctly released, and this causes a memory leak that is equal to the size
of the Rsabase.dll file.
A supported fix is now available
from Microsoft, but it is only intended to correct the problem that is
described in this article. Apply it only to computers that are experiencing
this specific problem. This fix may receive additional testing. Therefore, if
you are not severely affected by this problem, Microsoft recommends that you
wait for the next Windows NT 4.0 service pack that contains this
fix.
To resolve this problem immediately, contact Microsoft Product
Support Services to obtain the fix. For a complete list of Microsoft Product
Support Services phone numbers and information about support costs, visit the
following Microsoft Web site:
NOTE: In special cases, charges that are ordinarily incurred for
support calls may be canceled if a Microsoft Support Professional determines
that a specific update will resolve your problem. The typical support costs
will apply to additional support questions and issues that do not qualify for
the specific update in question.
The English version of
this fix should have the following file attributes or later:
Date Time Version Size File Name Platform
-------------------------------------------------------------
06/21/2000 15:07 5.0.1877.9 4,368 Enhsig.dll x86
06/01/2000 11:58 5.0.1877.9 101,648 Rsabase.dll x86
06/01/2000 11:58 5.0.1877.9 100,624 Rsaenh.dll x86
06/21/2000 15:07 5.0.1877.9 4,368 Rsasig.dll x86
Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
APPLIES TO
- Microsoft Internet Explorer 6.0, when used with:
- Microsoft Windows 98 Second Edition
- Microsoft Windows 98 Standard Edition
- Microsoft Internet Explorer 5.5
- Microsoft Internet Explorer 5.5
- Microsoft Internet Explorer 5.5
- Microsoft Internet Explorer 5.01
- Microsoft Internet Explorer 5.01
- Microsoft Internet Explorer 5.01
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