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Standard Viewer not working after Nov 2019

Created by: Jerry Thiesen
Created date:
Last Updated date:

Issue:

The Standard Viewer no longer shows documents on client computers that were working previously. They all show a generic media graphic like below.

mceclip0.png

This has been observed in Windows 7 , Windows 8, and Windows 10 computers on multiple versions of Summation/eDisco (6.0.1, 6.2, 6.3, and 7.1) .

Resolution:

1. Install IIS UrlRewrite extension from here (If not already installed): https://www.iis.net/downloads/microsoft/url-rewrite

NOTE: if web server is offline (i.e. cannot reach the internet), then here is a full download for "url rewrite" that can be copied to the offline machine.

https://www.microsoft.com/en-us/download/details.aspx?id=47337

2. Navigate to %ProgramFiles%\AccessData\MAP\

3. Open the web.config file with your preferred text editor.

4. Paste the below code into the web.config file directly under the <system.webServer> node:

<rewrite> 
<outboundRules>
<clear />
<rule name="Remove SameSite Lax">
<match serverVariable="RESPONSE_Set_Cookie" pattern="^(.*)(; SameSite=Lax)(.*)$" />
<action type="Rewrite" value="{R:1}{R:3}" />
</rule>
</outboundRules>
</rewrite>

5. Open an elevated command prompt.

6. Type iisreset

7. Clear cache on all browsers impacted.

 

CAUSE:

A Microsoft .NET update released in November 2019 changed the way web.config looks or expects to receive cookies. This particular update was combined in several different KB updates from November and December 2019. This change to the web.config file accommodates the change in behavior.

https://devblogs.microsoft.com/dotnet/net-framework-november-2019-preview-of-quality-rollup/

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