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As a workaround to avoid this issue, adjust the maximum memory size of REDIS for Trend Micro Endpoint Sensor. Do the following steps:

 
Due to present limitation, the memory usage of REDIS can only be increased.
 
  1. Stop Trend Micro Endpoint Sensor Server service:

    Trend Micro Endpoint Sensor Service

  2. Update REDIS config value in Trend Micro Endpoint Sensor database:

    UPDATE[-ApexOne-iES].[dbo].[Setting]
    SET[Value] = 8192
    WHERE[Key] like '%/TMSL/Redis/MaxMemorySizeInMB%'

    The figure "8192" means 8192 MB for REDIS, and "ApexOne-iES" is the sample database name.
    To query the current REDIS value:

    SELECT TOP (1000) [Id],[Category],[Key],[Value],[TimeStamp]
    FROM [ApexOne-iES].[dbo].[Setting]
    where [Key] like '%/TMSL/Redis/MaxMemorySizeInMB%'

  3. Start Trend Micro Endpoint Sensor Server service:

    Trend Micro Endpoint Sensor Service

  4. To verify, check if SSO function works. Re-deploy the policy and check it again.

Log Collection

  1. Collect CDT Logs by following this KB article.
    • Apex Central Server CDT
    • Apex One Server CDT
  2. Submit support ticket to Technical Support.