Internet explorer 6 VS1 doesn't support gzip compression correctly.
It does however understand deflate.
Is it sufficient to change the scheme name in applicationhost.config
from gzip to deflate to fix this issue?
Are there any downsides to using deflate instead of gzip?
<!-- c:\windows\system32\inetsrv\config\applicationhost.config -->
<httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files">
<!-- changed name="gzip" to name="deflate" -->
<scheme name="deflate" dll="%Windir%\system32\inetsrv\gzip.dll" />
<dynamicTypes>
[...]
</dynamicTypes>
<staticTypes>
[...]
</staticTypes>
</httpCompression>
Related links:
- Deflate compression browser compatibility and advantages over GZIP
- http://www.vervestudios.co/projects/compression-tests/
- http://en.wikipedia.org/wiki/Internet_Explorer_6
- http://msdn.microsoft.com/en-us/library/ms690689(v=VS.90).aspx
- http://www.iis.net/ConfigReference/system.webServer/httpCompression
- http://support.microsoft.com/kb/837251