Accessing explorer view updates modified timestamp only on e-mails (.msg) in SharePoint 2013

Question

Hi All,
We've recently discovered that when users are accessing explorer view in various libraries on SharePoint, libraries which hold emails (.msg) are automatically updating all email modified timestamps with the time explorer was accessed and presenting modified
by as the user who initiated explorer view as well. 
It is not all documents, only emails (.msg). This happens every time without fail: When accessing a library in explorer view, right clicking and selecting refresh (or adding a new document to the library via explorer) triggers all emails to have their modified
stamp updated. It creates a single version at the time of refresh if version control is on. 
Here is the log in the scenario where I refreshed a library in explorer view which has only one email called pings.msg and it has had its modified timestamp updated to the time of refresh:
Medium Entering monitored scope (Request (PROPFIND:http://...:80/sites/ICT/Shared%20Documents/desktop.ini)). Parent No 
Medium Name=Request (PROPFIND:http://...:80/sites/ICT/Shared%20Documents/desktop.ini) 
Medium Non-OAuth request. IsAuthenticated=True, UserIdentityName=0#.w|domain\me, ClaimsCount=29 
Medium HTTP Request method: PROPFIND 
Medium HTTP request depth header: 0 
Medium Overridden HTTP request method: PROPFIND 
Medium HTTP request URL: /sites/ICT/Shared%20Documents/desktop.ini 
Medium HTTP request translate header: f 
High [Forced due to logging gap, cached @ 09/12/2014 13:07:41.30, Original Level: Verbose] WOPI is disabled because no discovery data are found. 
High [Forced due to logging gap, Original Level: Verbose] SPRequestModule.PreSendRequestHeaders 
Medium Leaving Monitored Scope (Request (PROPFIND:http://...:80/sites/ICT/Shared%20Documents/desktop.ini)). Execution Time=12.1815063087627 
Medium Leaving Monitored Scope (Request (POST:http://...:80/sites/edrms/_vti_bin/sitedata.asmx:GetContentEx")). Execution Time=428.478759171906 
Medium Name=Task: SessionManager.PerformOngoingRequestDepartures 
Medium Entering monitored scope (Request (GET:http://...:80/sites/ICT/Shared%20Documents/Pings.msg)). Parent No 
Medium Name=Request (GET:http://...:80/sites/ICT/Shared%20Documents/Pings.msg) 
Medium Non-OAuth request. IsAuthenticated=True, UserIdentityName=0#.w|domain\me, ClaimsCount=29 
Medium HTTP Request method: GET 
Medium Overridden HTTP request method: GET 
Medium HTTP request URL: /sites/ICT/Shared%20Documents/Pings.msg 
Medium HTTP request translate header: f 
Medium Spent 0 ms to bind 81408 byte file stream 
Medium Spent 16 ms to send 81408 byte file stream 
Medium Leaving Monitored Scope (Request (GET:http://...:80/sites/ICT/Shared%20Documents/Pings.msg)). Execution Time=19.2898818145882 
Medium Entering monitored scope (Request (HEAD:http://...:80/sites/ICT/Shared%20Documents/Pings.msg)). Parent No 
Medium Name=Request (HEAD:http://...:80/sites/ICT/Shared%20Documents/Pings.msg) 
Medium Non-OAuth request. IsAuthenticated=True, UserIdentityName=0#.w|domain\me, ClaimsCount=29 
Medium HTTP Request method: HEAD 
Medium Overridden HTTP request method: HEAD 
Medium HTTP request URL: /sites/ICT/Shared%20Documents/Pings.msg 
Medium Leaving Monitored Scope (Request (HEAD:http://...:80/sites/ICT/Shared%20Documents/Pings.msg)). Execution Time=7.43690888087732 
High [Forced due to logging gap, cached @ 09/12/2014 13:07:41.35, Original Level: Verbose] SQL connection time: 0.0458857201124724 
High [Forced due to logging gap, Original Level: VerboseEx] Reverting to process identity 
Medium Entering monitored scope (Request (PUT:http://...:80/sites/ICT/Shared%20Documents/Pings.msg)). Parent No 
Medium Name=Request (PUT:http://...:80/sites/ICT/Shared%20Documents/Pings.msg) 
Medium Non-OAuth request. IsAuthenticated=True, UserIdentityName=0#.w|domain\me, ClaimsCount=29 
Medium HTTP Request method: PUT 
Medium Overridden HTTP request method: PUT 
Medium HTTP request URL: /sites/ICT/Shared%20Documents/Pings.msg 
Medium HTTP request translate header: f 
Medium Spent 0 ms to read 81408 byte file stream 
Medium |No zip central directory found 
Medium Information Rights Management (IRM): The email address of the requesting user is successfully set to IRM. 
Medium Information Rights Management (IRM): The IRM status of the document [Shared Documents/Pings.msg] is: untried (-1), the return values is: 0x0. 
High Leaving Monitored Scope (EnsureListItemsData). Execution Time=22.2785298131466 
Medium Spent 16 ms to parse 
Medium |No zip central directory found 
Medium |Nothing to commit
Any ideas on how to stop this behaviour?

Answer 1

Probably you have an antivirus that scan these files when you are open the library in Explorer View.
Try to configure the antivirus for exclude location.
Hope helps.
http://valygreavu.com/