Mathcad won't open beyond splash screen after unrelated crash

[RC_7515533]

My computer crashed while using mathcad (unrelated crash to Mathcad). After restarting, Mathcad won't open beyond the splash screen. I have uninstalled and reinstalled the program, and keep getting the same results. Splash screen opens, closes, and then nothing else happens.

[VladimirN · Accepted solution]

Tip - "Mathcad Prime does not launch after the initial splash on Windows OS": https://community.ptc.com/t5/Mathcad-Installation/Mathcad-Prime-does-not-launch-after-the-initial-splash-on/m-p/729884

Another one:

• 1. Create a backup (or just archive) of the config file (in this directory: C:\Users\CurrentUser\AppData\Local\PTC\).
• 2. Delete the current config file (in this directory: C:\Users\CurrentUser\AppData\Local\PTC\).
• 3. Run Mathcad Prime again.

[RC_7515533]

Thank you.  The config file fixed it. 

[VladimirN]

You're welcome.

[FM_9200540]

I just encountered this same issue and this solution worked for me, except my directory slightly varied. 

I found my config under: "C:\Users\CurrentUser\AppData\Local\PTC\MathcadPrime.exe_Url_...\9.0.0.0\user.config"

I moved it to desktop and restarted Mathcad Prime. I needed to revalidate my license and it works now. Compared the old and new configs and the old had a bunch of "null" where the new had setting lines; so it must have been corrupted.

I believe my issue was caused by leaving the Mathcad program running overnight on a weekend when my company shut off power for some electrical maintenance. This hard-shutdown prompted other windows issues on reboot and possibly corrupted my user.config file.