Found it! When doing the upgrade, my connections to repositories was erased. 

Side note, why?!?!?! I had to re-add my repository in the weblink designer! 

Anyways, when I re-added my repository, the dbid number changed. As soon as I used the new dbid in my link, it was working again. 

Samuel, can you confirm that when upgrading to 10.2 weblink, you have to reconfigure everything? 

WebLink includes a "Settings Bundler Utility" (C:\Program Files\Laserfiche\WebLink\WebLink\Utilities\WebLinkSettingsBundler.exe) which backs up a current config. Because WebLink does wipe the current config on upgrade, you need to use the Settings Bundler to Export prior and then re-Import after an upgrade.

We're aware this is annoying and are working on, at minimum, making it more obvious that you need to run the Settings Bundler prior to an upgrade in order to preserve your configuration. I've accidentally wiped my own WebLink configurations the same way and understand the frustration.

Thank you Samuel, 

However, my excitement was too early. I'm using a new link and a user just said they got the same error again. I'm able to recreate it. The really weird part is that the link works if I'm signed in! 

So Error occurs running this link and I'm prompted to sign in, 

https://MyCompany.com/WebLink/search.aspx?dbid=0&searchcommand=%7B%5BScholarship%5D%3A%5BStudent%20ID%23%5D%3D%22610472993%22%2C%20%5BSchool%20Year%5D%3D%222020-2021%22%7D

Then I click OK and Paste the same exsact link into the browser (I'm testing with Edge) and no error!

Another obersvation is the link resolves to this,

https://MyCompany.com/WebLink/search.aspx?searchcommand=%7b%5bScholarship%5d%3a%5bStudent+ID&dbid=0&repo=Corporate

What is going on? 

Not sure off-hand. I did notice that the link it resolves to adds the repo parameter and drops the School Year search term.

Right, why would it change? I'm getting this behavior in both Edge and Chrome. 

Hi Lucas,

Would it be possible for you to prepare the links beforehand with the repo already included in the URL, at the beginning of the query string?  Like:

https://MyCompany.com/WebLink/search.aspx?dbid=1&repo=Corporate&searchcommand=%7B%5BScholarship%5D%3A%5BStudent%20ID%23%5D%3D%22297784641%22%2C%20%5BSchool%20Year%5D%3D%222019-2020%22%7D

Hello Melanie,

I have been doing more research into this error and it seems like in 10.2, there is a redirect to a page that does a cookies check or something. (this is what my Web developer thought). 

He was able to bypass this redirect by adding cr=1 to the link. Like this, 

https://MyCompany.com/WebLink/search.aspx?dbid=1&cr=1&searchcommand=%7B%5BScholarship%5D%3A%5BStudent%20ID%23%5D%3D%22950257028%22%2C%20%5BSchool%20Year%5D%3D%222020-2021%22%7D

However, by using this link, Weblink shows an error.

Cookies are not enabled for this website. Cookies must be enabled in order to sign in to WebLink 10.

The easy workaround is to click Sign Out on that page and then sign in. Once signed in, our links work perfectly. 

In my opinion, it looks like the mechanism that checks for cookies also truncates my links on the first attempt. Once signed in, everything works. 

I can't be the only one experiencing this. Can you confirm this behavior change from 10.1 to 10.2?