[IMPORTANT] Regarding a Memory Leak Issue in PDF Output Processing with ConMas Manager On-Premises Version 8.2.25100
■ Addendum dated November 12, 2025
We have released a corrected version addressing the bug where 'memory used in PDF output processing was not being released' in ConMas Manager 8.2.25100.
We kindly request that all customers currently using ConMas Manager 8.2.25100 update to ConMas Manager 8.2.25101.
2025-11-12 Release information
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Thank you for your continued use of our products.
We have confirmed a memory leak issue related to PDF output processing in ConMas Manager On-Premises version 8.2.25100.
We sincerely apologize for the inconvenience this may cause.
As of November 5, 2025, the affected version has been withdrawn from public release.
We kindly request that you use ConMas Manager 8.2.25070 until the corrected version is released.
■ Issue Description
A bug occurs where memory is not correctly released during PDF output processing.
When the system runs for a long time or performs continuous PDF output, memory usage may increase, causing system instability.
■ Affected Operations
This issue may occur in the following operations, which involve PDF generation and thumbnail generation processes:
<PDF Output Operations>
・Downloading PDFs using ConMas Manager
・Automatic file output when saving documents
<Operations Involving Thumbnail Generation>
・Saving documents from the application
・Saving auto-numbered documents that display numbering on the first sheet
・Saving binder documents
・Executing Web API
・Changing the first sheet using the auto generate API
・Changing the first sheet using the update report API
・Executing the report copy API
■ Current Status
A fixed version is currently under development.
We will announce the release schedule on this page as soon as it is confirmed.
■ Emergency Workaround
To avoid the impact of this issue, we recommend downgrading to ConMas Manager 8.2.25070.
Please follow the steps below for the downgrade.
Note: This procedure applies only when downgrading from “8.2.25100” to “8.2.25070”.
1. Download the "8.2.25070" installer available on the Support Web.
2. Execute the "8.2.25070" installer, similar to an upgrade.
3. After execution, delete PdfNet.dll and PdfNet.xml from each of the following paths:
・[ConMas folder path]\ConMasAPI\bin
・[ConMas folder path]\ConMasManager\bin
・[ConMas folder path]\ConMasWeb\bin
After downgrading from "8.2.25100" to "8.2.25070," you may encounter issues such as display layout issues or non-responsive buttons.
This is caused by the latest version of the program being cached in the browser, and it can occur on browsers (both client terminals and servers) that have previously accessed "8.2.25100" Manager.
In such cases, please clear your browser's cache and try accessing it again.
We apologize for the inconvenience, but we kindly ask you to inform users who are expected to access Manager in advance about this matter (the need to clear the cache).
Additionally, in environments running 8.2.25100, restarting IIS may temporarily improve the situation when memory usage increases.
