Some EXEs from our website are not downloading completely. (ex: "winmansoftware.com/files/WinmanCAERP_Update.EXE")
Download completes 99% and gives error. But the same EXEs are downloading from other websites like Drop Box etc. Error message is shown here
Error is coming in less than 1% of our customers’ Pcs. For remaining customers same files get downloaded properly. EXE is digitally signed with thawte code signing certificate. Certification path is as shown here
We tried various options as mentioned below. (but in all the cases problem persisted)
- Tried with different browsers - chrome, Firefox.
- Cleared DNS configurations and IP reset
- Uninstalled Client pc Antivirus
- Disabled our web server antivirus.
- Error comes in our own download utility (using winsock) also.
- We restarted our web server.
When we compressed our exe (as .zip) file got downloaded & got extracted. Our We are using “Windows Server 2008 R2” in our web server. We have 2 web servers and both are of same configuration.
OS: Windows Server 2008 R2
Antivirus: Symantec Endpoint Protection 2012
Client PC Configuration:
Operating System Version - Windows XP Service Pack 3
Antivirus: Avast in one PC & Kaspersky Internet security 2013 in other PCs
Internet connection: Wired Broad Band with automatic IP configuration
Internet Explorer Version - Internet Explorer 6.0.2900
Same file can be downloaded from Dropbox
If we compress it gets downloaded from our website with no issues,
Lots of other computers still can download .exe itself without error (more than 2500 PCs have downloaded it & error comes in around 5 PCs)
If it was web server issue then other customers could not have downloaded. If it was customer PC issue they could not have downloaded it from Dropbox. Now how to trace error? What are the solutions?