Other software on your computer may be competing for the same memory Drive needs to operate.
If you've canceled login prompts multiple times, your session may become "inactive," triggering a -203 error. 203 - Google Drive
Identifying the root cause is the first step toward a solution. The most frequent culprits include: Other software on your computer may be competing
Understanding and Fixing Google Drive Error 203: A Complete Guide The most frequent culprits include: Understanding and Fixing
For developers or those using integrated Google apps, a 203 error can occur if a background process "unexpectedly died" before finishing a request. How to Fix Google Drive Error 203
Since 203 is often a "Non-Authoritative" error, bypass any VPN or proxy to see if Google Drive works directly on your local network.
Depending on how you use Google Drive, this error can manifest in a few different ways. Here is a deep dive into what Error 203 actually means and the best ways to fix it. What is Error Code 203?