# Photon fails cloud connect **URL:** \ **Category:** Troubleshooting\ **Created:** [May 5, 2018, 11:31pm UTC](https://community.particle.io/t/photon-fails-cloud-connect/41676 "2018-05-05T23:31:30Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![norstar](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/norstar/32/22991_2.png) [@norstar](https://community.particle.io/u/norstar)\ **Post date:** [May 5, 2018, 11:31pm UTC](https://community.particle.io/t/photon-fails-cloud-connect/41676/1 "2018-05-05T23:31:31Z")
I have several Photons and all are working as expected on this network/router less one. This Photon was working fine September 2017 and then sat unused until yesterday. When I powered it up yesterday it failed to connect and was fast blinking cyan with intermittent red flash. I assume I have a corrupt key but have had no luck resolving that. Feedback welcomed. **I tested the following;** uninstalled CLI reinstalled new (win7 installer) Particle update, success, still flashing cyan/intermittent red. Particle doctor [failed at very end with “New key created! The Doctor didn’t complete successfully. undefined”]. Firmware 0.7.0, firmware flashed from CLI (part 1 & part 2), success, still did not connect to cloud. reflashed bootloader-0.7.0-photon **flashed clouddebug.bin from rickkas7;** Opening serial monitor for com port: "COM17" Serial monitor opened successfully: configured credentials: ssid=Pupcreek security=wpa2 cipher=1 available access points: SSID=Pupcreek\_r security=wpa2 channel=5 rssi=-65 SSID=Pupcreek security=wpa2 channel=5 rssi=-57 connecting to WiFi connected to WiFi! localIP=192.168.1.20 subnetMask=255.255.255.0 gatewayIP=192.168.1.1 dnsServerIP=0.0.0.0 (often 0.0.0.0) dhcpServerIP=0.0.0.0 (often 0.0.0.0) ping gateway=1 ping addr 8.8.8.8=1 device.spark.io=34.207.234.253 connected to device server CoAP (testing connection only) connecting to cloud hung at this point particle keys server, OK new keys in place. particle keys doctor [my device ID] New Key Created! Make sure your device is in DFU mode (blinking yellow), and that your computer i s online. Error: Error writing key to device… Error saving key from device… Unable to generate public key from the key downloaded from the device. This usually means you had a corrupt key on the device. Error: Command failed: C:\Windows\system32 cmd.exe /s /c "openssl rsa -in backup\_rsa\_[my device]_rsa\_new.der - inform DER -pubout -out backup\_rsa_[my device]\_rsa\_new.pub.pem" unable to load Private Key 8520:error:0D0680A8:asn1 encoding routines:asn1\_check\_tlen:wrong tag:crypto\asn1 \tasn\_dec.c:1112: 8520:error:0D06C03A:asn1 encoding routines:asn1\_d2i\_ex\_primitive:nested asn1 err or:crypto\asn1\tasn\_dec.c:676: 8520:error:0D08303A:asn1 encoding routines:asn1\_template\_noexp\_d2i:nested asn1 e rror:crypto\asn1\tasn\_dec.c:609:Field=version, Type=RSA 8520:error:04093004:rsa routines:old\_rsa\_priv\_decode:RSA lib:crypto\rsa\rsa\_amet h.c:72: 8520:error:0D0680A8:asn1 encoding routines:asn1\_check\_tlen:wrong tag:crypto\asn1 \tasn\_dec.c:1112: 8520:error:0D06C03A:asn1 encoding routines:asn1\_d2i\_ex\_primitive:nested asn1 err or:crypto\asn1\tasn\_dec.c:676: 8520:error:0D08303A:asn1 encoding routines:asn1\_template\_noexp\_d2i:nested asn1 e rror:crypto\asn1\tasn\_dec.c:609:Field=version, Type=PKCS8\_PRIV\_KEY\_INFO ---
**Author:** ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)\ **Post date:** [May 5, 2018, 11:36pm UTC](https://community.particle.io/t/photon-fails-cloud-connect/41676/2 "2018-05-05T23:36:34Z")
Try running `particle doctor` from a non-system directory. Maybe it’s a permission problem to generate the key file inside `C:\Windows\system32` You can also try to send the keys “manually” this way ```nohighlight particel keys server particle keys doctor ``` ---
**Author:** ![norstar](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/norstar/32/22991_2.png) [@norstar](https://community.particle.io/u/norstar)\ **Post date:** [May 5, 2018, 11:49pm UTC](https://community.particle.io/t/photon-fails-cloud-connect/41676/3 "2018-05-05T23:49:12Z")
Thank you for the prompt response. I tested a non-system dir for particle doctor, failed as before. Also tested particle key server and doctor same, **Error: Error writing key to device… Error saving key from device.**