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Sophos Endpoint Protection fails with checksum error

Ashley Horn

Recently when installing Sophos Endpoint Protection from Sophos Central the install fails with checksum errors. Below are a few lines from the log file:

2018-01-25T14:39:58.7130318Z INFO : SUL info: [I19463] Syncing product SDU RECOMMENDED path=sdu
2018-01-25T14:39:58.7130318Z INFO : SUL info: [I19463] Product download size 4369571 bytes
2018-01-25T14:39:58.7130318Z INFO : Download size: 4369571
2018-01-25T14:39:58.7130318Z INFO : SUL info: [I19464] Syncing file 0ffc6f35d5af4f86f91dc62c10bfa782x000.dat: 4444 bytes: sdu/licenses.txt
2018-01-25T14:39:59.5100995Z INFO : SUL info: [I19464] File 0ffc6f35d5af4f86f91dc62c10bfa782x000.dat: sync failed
2018-01-25T14:39:59.5100995Z WARNING : SUL error: [E73342] Checksum error: 0ffc6f35d5af4f86f91dc62c10bfa782x000.dat: wrong size: saw 1, expected 4444
2018-01-25T14:39:59.5257289Z INFO : Command 'Download' completed with failure with reboot code '0' and error message 'Could not download software'.
2018-01-25T14:39:59.5257289Z ERROR : Installation failed.
2018-01-25T14:39:59.5257289Z INFO : Sending HTTP 'POST' request to: sophos/management/ep/install/events/endpoint/973ba348-402e-44b7-eb1e-60ee03209fcc
2018-01-25T14:39:59.5257289Z WARNING : WinHttpGetProxyForUrl returned: 12180
2018-01-25T14:39:59.5257289Z INFO : Attempting to connect using proxy '' of type 'Empty Proxy'.

 

I suspect the Watchguard firewall is causing this but I cannot pin it down. I have had Sophos and Watchguard involved but so far no luck, just finger pointing.

 

Any Ideas?

 

Ashley



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  • 0

    Hello Ashley,

    do other files fail as well or are some successfully downloaded. It's, as the INFO line days, a plain .txt file and should AFAIK get downloaded to %ProgramData%\Sophos\AutoUpdate\Data\warehouse\.

    Christian

  • 0 in reply to QC

    A side note, when connected to another network outside the Watchguard firewall Endpoint will download and install correctly.

     

    Ashley

  • 0 in reply to Ashley Horn

    Hello Ashley,

    no need to show the log, your word is enough. The file isn't there at all or is it actually of size 1 as the log claims? Seems the firewall doesn't like this particular file - but then, a firewall should log its interventions. I don't know the actual download URLs for Central, normally I'd suggest you try with a browser. On second thoughts - any URL for this file could be used and if it fails it's the firewall. I might be able to "find" a URL but not before tomorrow (and, hey, I'm not Sophos) but maybe could provide one.

    Christian

  • 0 in reply to QC

    The file is not there. I have watched the firewall while attempting an install and it never shows that it blocks anything. I have a policy in place to allow all from all the Sophos update servers but something seems to be corrupting a file rather than outright blocking it.

     

    Ashley

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  • 0 in reply to QC

    The file is not there. I have watched the firewall while attempting an install and it never shows that it blocks anything. I have a policy in place to allow all from all the Sophos update servers but something seems to be corrupting a file rather than outright blocking it.

     

    Ashley

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