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Citrix HDX HTML5 Video Redirection Service - stopped on all VDA's today

Erlend Oslashyen




after nightly reboot the Citrix HDX HTML5 Video Redirection Service won't start.

"The Citrix HDX HTML5 Video Redirection Service service terminated unexpectedly"


PVS 1909.1

Windows Server 2016

CVAD 1909.1


anyone else experiencing the same issue?

my first thought was that this could be related to a root certificate that's expired, but i have not found anything yet.

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Same issue here, also 2012 R2 servers. No PVS or MCS. 7.15 VDA.

Could it have something to do with the fact that it is the 29th of february?

And that this only occurs every 4 years?




I can confirm that when you change the date to yesterday (28th of february) and you start the service, that it doesn't crash.

If you change the date back to today, it keeps working.

Edited by walter2005
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yes, the date was why i suspected that this was certificate related.


it's querying these keys on service startup, they are related to certificates, it could be as someone sugested that it's related to that it's the 29 in a leap year


HKLM\SOFTWARE\WOW6432Node\Microsoft\Cryptography\OID\EncodingType 1\CryptDllEncodeObjectEx\1.2.840.113549.


and HKLM\SOFTWARE\Microsoft\SystemCertificates\MY\Certificates\0B1392CAEA67DB1BE48F629A845FAD95A6D5D40D\Blob

the certificate it searches for is CheckPoint Root CA

looks like the cert is valid to 01.01.2040.


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