cypress: Failed to deserialize the V8 snapshot blob error during 'run' and 'open in Windows - 3.5.0

Current behavior:

cypress run and cypress open, yield the following error after upgrading to 3.5.0:

Cypress failed to start.

This is usually caused by a missing library or dependency.

The error below should indicate which dependency is missing.

https://on.cypress.io/required-dependencies

If you are using Docker, we provide containers with all required dependencies installed.

----------
cypress open
It looks like this is your first time using Cypress: 3.5.0

#
# Fatal error in , line 0
# Failed to deserialize the V8 snapshot blob. This can mean that the 
snapshot blob file is corrupted or missing.
#
#
#
#FailureMessage Object: 0000003A7AAFEB88

----------

Platform: win32 (10.0.19002)
Cypress Version: 3.5.0
error Command failed with exit code 1.

Desired behavior:

Regain the ability to run tests and open the Cypress window.

Steps to reproduce: (app code and test code)

Run cypress run or cypress open on Windows 10 after upgrading to 3.5.0 via yarn upgrade cypress.

Versions

Cypress 3.5.0
Node 12.13.0
Windows 10 Version 1903, Build 19002.1002

About this issue

Original URL
State: closed
Created 5 years ago
Reactions: 2
Comments: 35 (3 by maintainers)

Most upvoted comments

npx cypress install --force

Fixed it completely.

+129

kristianfjelde on Oct 30, 2019

I also got the “Failed to deserialize the V8 snapshot blob”. Renaming the Cyrpress cache folder and reinstalling with npx cypress install resolved the problem though. Previously I upgrade the Vue CLI and had multiple errors here and interrupts. In my case, I think Cypress simply wasn’t install correctly. Just for information for your troubleshooting.

+85

bo-pedersen on Oct 25, 2019

On Windows, it’s in <user>\AppData\Local\Cypress\Cache<version>

+43

bo-pedersen on Oct 27, 2019

for me yarn run cypress install --force has worked well. to force the installation.

+22

wolffc on Jan 16, 2020

Joining the npx cypress install --force bandwagon, problem solved for me.

AaronRohrbacher on Nov 14, 2019

Worked for me too! Didn’t have to clear the cache though, only force reinstall.

AndreasHaaversen on Oct 29, 2019

cypress cache clear && cypress install fixed this issue in my case while upgrading from v4.1.0 to v4.5.0

y0n1 on May 5, 2020

Joining npx cypress install --force gang! Fixed it.

MichalBunkowski on Apr 15, 2020

Also happened to me today on a new install. FYI: on local machine, Windows 10, Cypress 4.4.0, using yarn. The above fix worked: yarn run cypress install --force

trevithj on Oct 6, 2020

We’ll be closing this issue as resolved. Please follow the workaround above for clearing cache during install if you see this error.

jennifer-shehane on Dec 10, 2019

I just had this happen to me because I accidentally closed out before installation had completed.

JGurganus12 on Nov 7, 2019

Also happened to me installing 8.2.0 and only solved with yarn run cypress install --force Tks @trevithj

lorainegarutti on Aug 14, 2021

Tried npx cypress install --force this was taking forever, not sure if it was doing anything. As others have pointed out the fix for me was navigating C:\Users*****\AppData\Local\Cypress renaming the Cache folder followed by running npx cypress install.

DanielRamos84 on Mar 16, 2021

with yarn:

remove cypress from node_modules
yarn install --check-files

TuomasKoivisto on Nov 13, 2019

I also got the “Failed to deserialize the V8 snapshot blob”. Renaming the Cyrpress cache folder and reinstalling with npx cypress install resolved the problem though. Previously I upgrade the Vue CLI and had multiple errors here and interrupts. In my case, I think Cypress simply wasn’t install correctly. Just for information for your troubleshooting.

This fix worked for me!

rdmorel on Oct 25, 2019