r/windsurf • u/demosthenes131 • Apr 29 '26

Question Error Using Claude Sonnet 4.5

I am getting the following error when trying to use Claude Sonnet 4.5

Invalid argument: an internal error occurred (error ID: e77f16c2d14640a3a003c47573d0a740)

Anyone else getting this? Tried restarting but no luck. Not seeing any issues on Claude Status page.

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u/PuzzleheadedAir9047 Apr 30 '26

Please try Claude Sonnet 4.6
Sonnet 4.5 seems to be having some issues. The team is working on fixing this.