Updating TSplus doesn't work and you get this error message:
Url On Client
Cannot open this web page remotely
\\tsclient\c\webtmp\ not found
Please make sure you did not enable this option from your AdminTool:
AdminTool \ Advanced \ Sessions \ URL on Client - Enable "tel:" protocol
value set on "No"
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/2043230898499/original/O7ut0J25dk8xJSrMjWckafPmldm_a4ZbTg.png?1623940141)
And this one as well :
AdminTool \ Sessions \ Settings \ Open URLs on user side
must be disabled.
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/2043230898495/original/9o8tIQTTDIo1a3ng6vldEQPlISMqsSVo8g.png?1623940141)
Why?
Because your system is currently trying to open the update URL using URLOnClient instead of the normal way, so you need to disable it during your upgrade process.