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Checksum Error on Internet Explorer

Running Windows 8 and every time a browser updates itself I have to manually update the checksums.  This time I rebooted and I suppose Internet Explorer had updated and now the firewall says the checksum does not agree.  But even when I go into the checksum list and replace the app, the checksum does not work.  I still get the checksum error.  I have verified that I am updating the checksum from the app I am running.  I can't figure out what is going on that the checksum when running is not the same as the checksum Sophos gets when it is simply on the hard disk. 

Any idea how to troubleshoot this problem?  It is getting so that I don't want to reboot my machine anymore because every time I do Sophos firewall has a problem granting access to valid apps.

:49568


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  • Hi Christian,

    Maybe I didn't explain myself clearly.  I *AM* updating the checksum manually in the Sophos firewall configuration.  I go to the checksums tab and click "add", navigate to the location of iexplore.exe and select it.  When I click "open" the checksum is added to the list.  But even if I restart the Internet Explorer application it is flagged as a wrong checksum when I try to access the Internet. 

    But it gets worse.  The revision number in IE was not the same as reported by Sophos so I thought I would rename the app and see if I could get Sophos to recognize the correct revision number.  That part worked, but now I can't rename the app back to iexplore.exe.  I am stopped by the protections.  Silly protections let me rename the thing, but now stop me from renaming it back???  wth...  I made a copy of the file and named it iexplore.exe and this has the old revision number and of course Sophos won't allow it to access the Internet... you guessed it, bad checksum.

    :49592
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  • Hi Christian,

    Maybe I didn't explain myself clearly.  I *AM* updating the checksum manually in the Sophos firewall configuration.  I go to the checksums tab and click "add", navigate to the location of iexplore.exe and select it.  When I click "open" the checksum is added to the list.  But even if I restart the Internet Explorer application it is flagged as a wrong checksum when I try to access the Internet. 

    But it gets worse.  The revision number in IE was not the same as reported by Sophos so I thought I would rename the app and see if I could get Sophos to recognize the correct revision number.  That part worked, but now I can't rename the app back to iexplore.exe.  I am stopped by the protections.  Silly protections let me rename the thing, but now stop me from renaming it back???  wth...  I made a copy of the file and named it iexplore.exe and this has the old revision number and of course Sophos won't allow it to access the Internet... you guessed it, bad checksum.

    :49592
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