This article will be of help to you if you've inadvertently updated SME to one of the following before you fully tested it in your network:
- The latest Anti-Malware Scan Engine
- A beta or release candidate Anti-Malware Scan Engine
CAUTION: This article contains information about opening or modifying the registry.
- The following information is intended for System Administrators. Registry modifications are irreversible and could cause system failure if done incorrectly.
- Before proceeding, Technical Support strongly recommends that you back up your registry and understand the restore process. For more information, see the Microsoft Windows registry information for advanced users article.
- Do not run a REG file that is not confirmed to be a genuine registry import file.
This method rolls back the Scan Engine only for SME. It doesn't roll back the Scan Engine for any of our other products installed on the Exchange Server.
NOTE: To roll back to the previous Engine, both the previous
6xxx.xxxx Engine folder and files must exist in the SME folder structure. If the folder and files for the previous Engine have been removed, contact Technical Support (see the "Related Information" section).
To roll back the Scan Engine, perform the steps below:
- Make sure that the previous Engine folder and files are present.
- Start Windows Explorer.
- Go to the following folder: <MSME install folder>\bin\Engines (default is C\Program Files (x86)\McAfee\MSME\bin\Engines\)
- Make sure that the 6xxxx.xxxx folder exists and contains files.
- To set the Engine version that you would like SME to use, modify the registry:
- Click Start, Run, type regedit, and click OK.
-
Browse to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\McAfee\MSME\SystemState
-
Double-click the
EngineVersion registry value.
- Change the Value data field, and then click OK. For example, specify 6xxxx.xxxx.
- Close the registry editor.
- On the SME homepage, verify the version information to make sure that SME is now using the older Scan Engine.
Example - Rolling back the 6700 Beta engine when it's inadvertently deployed to SME
Make sure that the previous 6xxx Scan Engine folder and files exist in the SME folder structure:
- Start Windows Explorer.
- Go to the following folder: <MSME install folder>\bin\Engines (default is C\Program Files (x86)\McAfee\MSME\bin\Engines\)
There are at least two engine folders:
6600.9927
6700.xxxx (the beta or release candidate number of the release determines the full name of the engine folder)
- Make sure that the 6600.9927 folder contains the files below:
config.dat
McScan32.dll (version 6600.9927)
SignLic.txt.
To set the Engine version that you would like SME to use, modify the registry:
- Click Start, Run, type regedit, and click OK.
- Go to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\McAfee\MSME\SystemState
- In the right pane, double-click EngineVersion. Value Data is 6700.xxxx if the build of 6700 beta or 6700 release candidate is deployed.
- Change the Value Data. Type 6600.9927 so it reflects the name of the 6600 engine folder.
- Close the Registry editor.
- On the SME homepage, verify the version information to make sure that SME now uses the 6600.9927 scan engine.
